Gen5 Prelude VTI-R Manual! CAI + VAFC + IVAN/ Hipower Raceing Tune !! = Very happy!

[Sexc86]

Hey guys

Over the past 6 months my girlfriend has owned her first car. We were lucky enough to score her Gen 5 H22a Vtir Manual Prelude!. We have done a few little mods, keep in mind my partner is a uni student with a budget. Being in love with hondas my self i insisted on getting her a polished cold air intake system and a Vafc ( bit of bling and a bit of go).

Being an electrician myself i wired in the Vafc No problems but tuneing it was the hard part, which i did not even want to attempt myself. Finially got together a spair $200 to get the Vafc Tuned and we were very very happy with the results ivan could do for us, and extrememly surprised what sort of gains you can just get from a tune and a VAFC. Before the tune, the car seemed a little sluggish in low revs and had some sort of flat spot in the pickup. Also the vtec changeover was a little harsh and aprox 5800rpm. The car would pull well but seemed to dip off a little bit near redline.. aprox 7800. Also was running quite rich with much unburnt fuel on acceleration.

The Tune that ivan did last night took around 90mins. Basically it involved a wideband O2 Sensor in the exhaust running up to a gauge inside (that he was watching while tuneing). Before the tune started ivan played around with the vafc and brough all the settings back to default.

The Vtec changeover was taken down to 5500 and the tune was basically down in 3 stages. Low Rev, High Rev and Test (best part eheh!!). Low rev was done in 4th gear and several runs were done by slowing down and full throttle in 4th for a set point in time. Each time ivan would be changeing stats on the vafc map to get the best and safest power output. Now that the Low rev range was done, time to start playing with high rev and vtec.
This was done in 3rd gear and involved a similar process slowing down and open throttle etc while adjusting some settings on the vafc.

Was very surprise how the vafc can make the cars power curve and induction sound so much different. It started at the standard sound which seemed a bit raw, harsh and higher pitch... and in the end it was alot more of a deeper and thicker noise ( barrrrrrrrBWWAAHHHHH to boooooOOOBWWOOOAHHHHH ... ehhe Very cool! )

Now was the time for test. We pulled over on the highway (110km/hr zone) and waited for all traffic to pass. The test was open throttle all the way to speed limit. So 1st, 2nd and some of 3rd. After tuneing both high and low revs the difference was great and NO UNBURNT FUEL!!! YAY!!. Car would wheel spin in 2nd and massive jumps in 3rd. No flat spots in low revs, much better low end torque, earlier and smoother vtec change over and no power loss near redline ( just wants to keep going and goin....!). Also seems to be better on fuel too!!.

Estimated a power of aproximately 130fwkw (give or take ) and we believe it could do a low 14 at willobank (depending on driver). Feels very similar if not more powerfull then a standardish dc2r or dc5r (not trying to cause a shit fight just putting it in perspective for some people) just does not rev as high. (we are still happy with 8200 though hehe)

ATTENTION!!... NO TRAFFIC LAWS WERE BROKEN ON DOING THIS TUNE NOR WERE ANY OTHER DRIVERS PUT AT RISK!

Anyway guys let me know what you think of my little write up and feel free to ask a few questions or make a few comments. Massive thanks goes out to Ivan at hi power raceing to look after us especially in his free time!! I had a Dyno tune on my Boosted Dseries Civic (microtec stand alone management) for $700!!! by APC which did not seem half as good as this road tune ivan did (just with a basic piggy back vafc). Just goes to show how import a good tuner is !


Thanks In Advance

Regards Lyle & EvI

Ps My apologies for not going into anythign technical with the vafc, i unfortunately dont specifically know hows its tuned or how the softwear works etc etc... but possibly if ivan reads this thred he could go into a bit more detail in what he did

[EG5[KRT]]

cool man glad u like it.. when i get my car hooked up with a vafc.. ill b getting ivan to do mine as well.. my mate with a prelude got his vafc tuned by ivan as well and he only said good things about it.

[CUL8R]

lol ok....to reach 130fwkw on a h22 ull need minimum intake exhaust and headers, ull prob still need IM and tb. and when i say headers and exhaust im talking high up items,
i have a friend, smsp headers, custom exhaust with skunk 2 im and tb(forget brand, made in same factory as skunk 2 with same specs) flowbenched and aem CAI tuned with standalone s200 ecu. pulls 130, im sorry but u figures are too high and at best ill guess ur at a low 15 pass


so....tell me ur mods and then maybe i may believe ur figure, but quite frankly im doubting it ALOT


and do u know how a vafc works? it tricks the ecu into pumping more/less fuel without changing ignition independantly.

[preludacris]

easssy there marty .. haha


but yeah 130 atw.. not happening mate. sorry to say. about 15kw too high at least. and yeah quarter mile will be 15 flat iffff lucky.

other than that. nice to hear the great results :)

[Sexc86]

nice to get some replys, from what i have herd the vafc is a pretty good unit, Ivans 12.03 b20 crx is running a vafc and some other basic unit (no hondata) goes harder then probably most N/a cars on here. (im very sure some of the brisbane boys can vouch for it )

As figures no i cant give anyone anything accurate but in terms of 1/4 time, i have raced my boosted civic that makes 105fwkw (with BIG stereo, full street trim AND 19inch rims 25kgs each... ) i can usually do mid to late 14s... in street tyres

The prelude now would EASILY pull on my car at low revs but maybe up top be roughly evan (vtec vs full boost) so no i completely disagree with the 15s statement hehe...

I do know it would take a lot of practice to achieve the goal but i have no problems with comeing back and posting up a few time slips...... ;)

peace guys and keep it friendly here or i have to start leaving some neg feedback

[todas**t]

im glad your tuners go with u all the way to make there customer happy,unlike in here tune your car take your money and when u come back unhappy they blame it on the engine.......good one dude :thumbsup:

[Sexc86]

heeh yeh there are some really dodge workshops up here mate trust me

like quote you $500 for a dyno tune and then when its done... it runs like shit, blows unburnt fuel, and they turn around and ask for 1100 because they had to change your fuel filter and sparkies... go figure... ****in criminals if you ask me... but at the end of the day i will never recommend them to anyone or take any of my business back there

[Benson]

heeh yeh there are some really dodge workshops up here mate trust me

like quote you $500 for a dyno tune and then when its done... it runs like shit, blows unburnt fuel, and they turn around and ask for 1100 because they had to change your fuel filter and sparkies... go figure... ****in criminals if you ask me... but at the end of the day i will never recommend them to anyone or take any of my business back there

Sounds like someone had a bad experience. Good to hear you are a happy customer.

Goodluck with ur car.

[tct]

low 14s in ur dreams and especialli with ur driving....hahahahaha no way in hell

[preludacris]

cai and a vafc, and u'll run a 15 second qtr mile if ur lucky

i'd love to see some low 14's tho. i'll be waiting to see ur time slips. :)




I do know it would take a lot of practice to achieve the goal but i have no problems with comeing back and posting up a few time slips...... ;)

peace guys and keep it friendly here or i have to start leaving some neg feedback

[Sexc86]

Sounds like someone had a bad experience. Good to hear you are a happy customer.

Goodluck with ur car.


hahah yeh me and a few of my friends have been to this brisbane tuner had very similar things happen.

Ie... quoted a price, upon return it was double because of this this and that etc...

[Sexc86]

low 14s in ur dreams and especialli with ur driving....hahahahaha no way in hell

well we ran a high 14 a few months ago without the vafc, just cold air intake, stereo removed low tyre front pressure and a few runs... i got no probs posting the slip if noone believes..... why is it so hard to believe that a h22a prelude will pull a late 14?

im only istimateing as the vafc makes it go better so in theory i should pull a better time next time we go....

[Sexc86]

low 14s in ur dreams and especialli with ur driving....hahahahaha no way in hell




and who are you mate? hahaha yeh goes to show what sort of immature useless posts come out of wankers mouths on this forem these days.... real shame as there are some really good people on here with heaps of great knowledge to share.... just useless shit like this is a bit dissapointing...

if you post anything more negative or offensive here consider youself givein a bad rep point champ (Y)

[Benson]

hahah yeh me and a few of my friends have been to this brisbane tuner had very similar things happen.

Ie... quoted a price, upon return it was double because of this this and that etc...

Sounds very similar down here in sydney. :(

[Sexc86]

heehh yeh i know its funny how some sparkplugs, oil and a fuel filter can add up to like an extra $500

[Sexc86]

also guys forgot to mention it has a heavy duty clutch and machined fly wheel, so didnt have any clutch slip which let us get good launches and no slipping in gear changes

[Hipowerracing]

Great thanks to lyle and evi.

very glad that you guys are happy.. just doing my job the best way i know how.

Vafc is not the best tuning tool, but bang for buck it's definately worth getting one.

i always read people bagging the VAFC. VAFC is really good as fuel mapping is where you get most of your hp gains from. iginition tuning does increase hp but not as dramatic as fuel mapping. but of course the combination of iginition and fuel mapping is where you get your acceleration and power.

however it only shows that a tuner is only good when he has mastered the tool he tunes with.. example. motec is a great ECU but i would not be able to get as much from the motec as i can get with the VAFC, because i simply have not used a motec before.. haha..

in my next trip to japan i will be learning to tune the power f.c. and Emanage. got a very good tuning teacher from Jun and Kenstyle in japan.. thank you sensei.. :)

i still got lots to learn

[EuroAccord13]

Keep To Topic...

Any Bs Flaming Against Members/Newcomers Will Not Be Tolerated...

[Sexc86]

*EuroAccord13 Edit*

here is our timeslip from jan with vafc, standard h22a with cold air intake, heavy duty clutch, lowered tyre pressure and removed stereo etc etc

http://i17.tinypic.com/35jijd3.jpg

[preludacris]

OOo
respect then

good effort, i guess the clutch and vafc do help quite a bit. do you have coilovers at all ?

[Sexc86]

that was a time with the VAFC tuned, we do however have king springs with munro shocks and a hd clutch, bit of weight reduction, low tyre pressure, some good practise runs etc etc... nothing relaly crazy

[todas**t]

Great thanks to lyle and evi.

very glad that you guys are happy.. just doing my job the best way i know how.

Vafc is not the best tuning tool, but bang for buck it's definately worth getting one.

i always read people bagging the VAFC. VAFC is really good as fuel mapping is where you get most of your hp gains from. iginition tuning does increase hp but not as dramatic as fuel mapping. but of course the combination of iginition and fuel mapping is where you get your acceleration and power.

however it only shows that a tuner is only good when he has mastered the tool he tunes with.. example. motec is a great ECU but i would not be able to get as much from the motec as i can get with the VAFC, because i simply have not used a motec before.. haha..

in my next trip to japan i will be learning to tune the power f.c. and Emanage. got a very good tuning teacher from Jun and Kenstyle in japan.. thank you sensei.. :)

i still got lots to learn
good to see some1 willing to learn the meaning of tuning,when you get back you can teach then here on how to tune.

[grumpy rooster]

We make about 132kw at the wheels. Everything is standard apart from some porting and a little more compression via a shaved head. Not much though. Thats with a decent tune but there is more left to be played with. We have however eliminated the alternator and all other engine accessories that put drag on the engine and hence sap power. Everything else is standard including inlet manifold, injectors and even the headers.

130kw is possible. Don't be too quick to judge guys.

[DLO01]

Well done all round.

[crx51]

Its good when someone puts up a timeslip that proves what they've just said. Mate i reckon its a good review you've done its in lay man's terms and rather than sounding like you are showing off with technical jargon, instead you explained the difference in feel and sound and stated how impressed you were with the tuner. You actually have made me want to look into a VAFC for my crx mate. Much better to read than just reading a/f ratios etc (although these do have their place).
People are pretty quick on this site to try shooting people down in flames. Low 14s is pretty quick but i just wish ya luck with it mate.
I dont really see a point in everyone posting "oh you'll never get that you idiot.." type posts. If you dont think its possible then thats cool but he's obviously run pretty damn good times before (nice slip), if you dont agree share but dont flame. Really its just lame to waste time getting on a forum to rubbish people, there's thousands of threads on ozhonda so read one you agree with and post to that and ignore threads you cant say anything constructive on.
Hey by the way sxc86, since you are from qld, come on a cruise with us in 4-6wks, we'll be doing mountain run - look in lounge for details....
Thanks again for the review mate...

[Sexc86]

im thrilled, thanks for all the replys guys.. when you have a group of people that actually reply with usefull info/comments it really does makes you feel really good and also incourages you to keep contributing to the ozhonda community.

im glad my review was usefull to some people and i hope the majority got some sort of knowledge or enjoyment from reading it.

Im pretty keen for cruiseing with other honda owners... anyone feel free to add me to msn Draper_Ebay@hotmail.com or shoot me over an email and we can organise somethin!

[Bob san]

regarding the tune, did ur tuner ask you what you wanted or do you leave it up to him? also $200 for a tune is that on a dyno?

[Sexc86]

mate in the initial post, it was stated what tune it was and how it was done.... Road tune Not dyno... and yes i am very very happy with the value we got in regards to perforamance / money

[fishman]

that time slip isn't even of the prelude. sif lie to everyone for.

[redliner]

5th gen lude can pull 14.9 with full exhaust and cai and nothing stripped and no tunning.. its been proven at WSID last year. I cant see why it cant pull 14.7 with those mods.

[dundas]

i believed you from the start :D
i always heard that the lude would run high-mid 14s dependent of driver...
but now your living proof and it has been witnessed on a piece of paper :D
so what clutch do u have?

[jansenrw]

If you want to bench mark your lude, I'm sure you might be able to join a few ITR's or even come for a friendly cruise if you'd like. As for mountain runs, I advise against a big pack of cars on nebo/glorious. Seems like a bit of a recipie for pissed off public and traffic jams.

On a slightly different note, If you guys would like a good run, how about we organise a track day, should be about $80 a per head.

[Mitchman]

agreed it was probably a bit harsh for those c omments straight up from some of the guys but the time of 14.7 from a stock 15.3 is remarkable!

Standrad prelude puts roughly 100-108kw standard at the treads.In regards to the drag car mentioned- to pull an extra 20-30kw from an already pretty well tuned high comp motor shocks me entirely! especialy when there are people with smsp headers tuned intake piping IM TBs running s200 with a tune from one of the best tuners for honda there are in the country and pulling only 138kw?? how does that work.. does an alternator and power steering etc realy pull that much cause i know upping comp alone realy aint going to push up power that hard!

[Mitchman]

The car would pull well but seemed to dip off a little bit near redline.. aprox 7800. Also was running quite rich with much unburnt fuel on acceleration.



7800??? NEAR redline??? mmmmm 7200rpm redline standard you mean 6800?
oh and 5800 engaging vtec? thats not right it SHOULD come on at 5500 standard give or take that seems odd to me

[grumpy rooster]

agreed it was probably a bit harsh for those c omments straight up from some of the guys but the time of 14.7 from a stock 15.3 is remarkable!

Standrad prelude puts roughly 100-108kw standard at the treads.In regards to the drag car mentioned- to pull an extra 20-30kw from an already pretty well tuned high comp motor shocks me entirely! especialy when there are people with smsp headers tuned intake piping IM TBs running s200 with a tune from one of the best tuners for honda there are in the country and pulling only 138kw?? how does that work.. does an alternator and power steering etc realy pull that much cause i know upping comp alone realy aint going to push up power that hard!


130kw at the wheels is not that hard to achieve. Proven. :)

[Mitchman]

130kw at the wheels is not that hard to achieve. Proven. :)

Yeah i dont doubt for a second your 130 claim. It just shocks me thats all! when others spend alota dosh on the best parts AND have the best tuner tuning and still only just passing that mark. :confused:

[Photonic_Si]

7800 rpm is about the redline of the h22a in a prelude. 8000 or so (from memory of thrashing one at the old dealership) is the limiter. If yours redlines at 6800, hahahaha!!! you haven't got an H22A.

And i specifically remember it hitting vtec near 5800 or 6000 ..... +/-

[Mitchman]

7800 rpm is about the redline of the h22a in a prelude. 8000 or so (from memory of thrashing one at the old dealership) is the limiter. If yours redlines at 6800, hahahaha!!! you haven't got an H22A.

And i specifically remember it hitting vtec near 5800 or 6000 ..... +/-

Dude.... I have a fully build H22a4. go check your tacho youl see it redlines way before then. 6800 is what an auto h22 redlines at im pretty sure, FUEL CUT is at 8grand... but not redline fool

[94vtirozguy]

130kw is achievable and able to done several ways. But until there is a dyno chart, which is roughly referenced to a stock car of the same type on the same day on same dyno, the amount of power put down is heresay.

[grumpy rooster]

The 130kw of our car was done (on that occasion) on the same dyno day as a number of other DC2R's where the highest made 112kw. Other H22A's on the day made 106kw. Can get you a dyno printout if you really want. :)

At the end of the day its only a number that doesn't mean a whole lot. Its how the car fulfils its intended purpose and uses whatever power it has that matters. Dyno queens are gay. :thumbdwn:

[94vtirozguy]

true but i was referring to the original post.. guessing he had 130kw...

[grumpy rooster]

Well in that case pretend I never spoke. :wave:

[Hipowerracing]

Dyno queens are gay. :thumbdwn:

yup couldnt agree more:thumbsup: