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View Full Version : Hondata S300, worth doing?!



TweetR
07-02-2012, 07:00 AM
Hey guy's, i own a DC2R and looking to get a hondata s300 put in.. I have a Injen Cai and now searching for a full exhaust system! The question is, is it worth spending my hard earned $650? What gain's will i expect?

Cheers! Any help would be appreciated..

dougie_504
07-02-2012, 10:14 AM
$650 + tuning, so expect more on top. $1g+ you'd think.

You can expect a noticable gain probably, a handful of KW's maybe, and if you plan to do future work it's a good investment.

IV73CI
07-02-2012, 11:10 AM
expect at least 15-30kw gains from I/H/E + S300 tuned.

end of the day will depend on the tuner's expertise and experience of tuning.

infurNOS
07-02-2012, 02:24 PM
Proper tuning will generally yield a better powerband and overall power when you are comparing a stock ecu to a tuned ecu when you have intake/header/exhaust.

im in the exact same boat as you. I have I/H/E and jsut about to purchase S300, from what i have read it is well worth it... how much the VTEC point will be moved is what im really interested in...

IV73CI
07-02-2012, 02:32 PM
im in the exact same boat as you. I have I/H/E and jsut about to purchase S300, from what i have read it is well worth it...i wonder how much the VTEC point will be moved...

with all the supporting bolt on's and the correct tune, you will def feel, HEAR, shit your pants from the VTAKKKK power gains yo!

just do it ....do it....just do it! ...

find the best tuner and away you go.!

infurNOS
07-02-2012, 02:47 PM
with all the supporting bolt on's and the correct tune, you will def feel, HEAR, shit your pants from the VTAKKKK power gains yo!

just do it ....do it....just do it! ...

find the best tuner and away you go.!

Lol, i have the tuner organised jsut waiting on a some decent headers to show up. The ITR cams are pretty big so i cant see the VTEC engagement shifting much.

infurNOS
07-02-2012, 02:48 PM
$650 + tuning, so expect more on top. $1g+ you'd think.

You can expect a noticable gain probably, a handful of KW's maybe, and if you plan to do future work it's a good investment.

and probably a bit more for a conversion harness also.

EKVTIR-T
07-02-2012, 02:51 PM
Will be better when you put a turbro

Even 10psi will be awesome

u mad?
07-02-2012, 02:54 PM
you'll gain good midrange, and decent power gains everywhere really, not to mention better fuel consumption. plus you can always get a good chunk of your change back if you decide to sell by parting it out.

just do all the mods you think you'll do before you tune, save you paying for two (or 3 ect lol).

at least have your intake, header, cat and exhaust before you tune.

infurNOS
07-02-2012, 02:56 PM
now searching for a full exhaust system!

I recommend Fujitsubu RM-01A if you are after midrange or the Power Getter for top end...I have the Power Getter and it sounds very aggressive and not loud!

u mad?
07-02-2012, 02:59 PM
as for kw gains- going by what the old owner of my car said, it made 110kw atw with mugen header, jdm cat, mugen twinloop, j's racing whale penis. got it tuned and made 121kw atw. So many variables to consider though.

infurNOS
07-02-2012, 03:03 PM
as for kw gains- going by what the old owner of my car said, it made 110kw atw with mugen header, jdm cat, mugen twinloop, j's racing whale penis. got it tuned and made 121kw atw. So many variables to consider though.

My B18c2 made 117kw atw with I/H/E + tune and 2.5x the km of my DC2R...so i will be expecting 125-130 kw, but yea you right, so many variables

u mad?
07-02-2012, 03:19 PM
My B18c2 made 117kw atw with I/H/E + tune and 2.5x the km of my DC2R...so i will be expecting 125-130 kw, but yea you right, so many variables

what combo you using.

infurNOS
07-02-2012, 03:20 PM
Sorry to thread jack but via the tune would it be pheasible to change the redline to 9k on stock DC2R springs if it is still making power up to that point without doing damage?

infurNOS
07-02-2012, 03:21 PM
what combo you using.

i used (car is sold now) Short ram intake, 65mm TB, skunk2 gen 1 IM, RMF rep 4-1 headers and 2.5" custom lukey exhaust, tuned with ProECU

http://www.ozhonda.com/forum/showthread.php?83735-My-EG-B18c2-Civic&p=2376664#post2376664

u mad?
07-02-2012, 03:30 PM
Sorry to thread jack but via the tune would it be pheasible to change the redline to 9k on stock DC2R springs if it is still making power up to that point without doing damage?

c7 botom end is apparently good for 9200 rpm, not that you'll be making power that high. Oem cams i noticed dropped off after 8600 rpm and my redline was 8900.

Only worth it if you have headwork. Not goot for engine life.


And I meant the combo you're using on you c7 to expect 130kw.

GSi_PSi
07-02-2012, 03:39 PM
moe - you also get benefits like launch control and CEL shift light.... any errors your car might have you can see on the laptop etc
if you ever go turbo has lots of options, if you ever want to use nitrous etc haha

infurNOS
07-02-2012, 04:18 PM
c7 botom end is apparently good for 9200 rpm, not that you'll be making power that high. Oem cams i noticed dropped off after 8600 rpm and my redline was 8900.

Only worth it if you have headwork. Not goot for engine life.


And I meant the combo you're using on you c7 to expect 130kw.

ah sorry. Comptech Ice box, RMF 4-1 Headers and 2.5" Fujitsubu exhaust with S300

TweetR
07-02-2012, 04:57 PM
Thanks guys! I have found a mugen twinloop catback.. Any suggestion on headers? Trying to keep noise to a minimum!

IV73CI
07-02-2012, 05:37 PM
DC Sports 4-1 SS.

u mad?
07-02-2012, 06:38 PM
Thanks guys! I have found a mugen twinloop catback.. Any suggestion on headers? Trying to keep noise to a minimum!

theres a mugen headr on here for sale, he's asking a fair bit though... search around and you might pick up a bargain.

dougie_504
07-02-2012, 09:20 PM
and probably a bit more for a conversion harness also.

Why would he need a conversion harness?

GSi_PSi
07-02-2012, 09:48 PM
He means, ECU OBD2A to OBD1 conversion harness, its like 60 bucks on ebay shipped from the states, or $100 bucks locally used

infurNOS
07-02-2012, 09:59 PM
He means, ECU OBD2A to OBD1 conversion harness, its like 60 bucks on ebay shipped from the states, or $100 bucks locally used

Thank you gsi psi

IV73CI
07-02-2012, 11:14 PM
Ebay ones see shit and some still need extra wiring el cheapo harness.

Buy Rywire or something along the 100$ + range and it will be a better quality and will actualy work.

dougie_504
07-02-2012, 11:25 PM
He means, ECU OBD2A to OBD1 conversion harness, its like 60 bucks on ebay shipped from the states, or $100 bucks locally used


Oh yeah, $100 is fine but I'm thinking in my head no way would this be a PITA like going OBD0 to OBD1 lol. Much easier the other way round...

infurNOS
13-02-2012, 02:43 PM
you need to find a dealer in Australia to purchase Hondata now by the way...

TweetR
13-02-2012, 04:43 PM
you need to find a dealer in Australia to purchase Hondata now by the way...

I have found a Ecu on ebay called the ''Black Ecu'', Hondata s300 installed and is from the states!

infurNOS
13-02-2012, 06:10 PM
Sorry i meant verson 2, which just got released. Let me know how it is

freakygeek
15-02-2012, 02:06 PM
I purchased my S300 from the US as a complete unit with OBD2A. About $830 shipped. Keep your old ECU in the cupboard in case you need to return to stock for whatever reason / selling / etc.

My car made 125kW atw with Toda header, high-flow cat, RM01A and Mugen intake. With S300 tuned by Adrian @ Toda, it made 135.6kW atw. Noticable gains in the midrange, much smoother VTEC transition, definitely well worth the $$ spent. I regret not doing it ages ago.

The key is in the tune though... an experienced tuner will make your car reliable and economical on cruise, not just focus on dyno numbers.

freakygeek
15-02-2012, 02:10 PM
Dyno chart before & after ....

Torque before VTEC now the same or better than in VTEC before (bottom lines).

Notably smoother - check out the VTEC transition.

Worth it? I think this graph says it all, but driving it is even better.

infurNOS
15-02-2012, 02:49 PM
Dyno chart before & after ....

Torque before VTEC now the same or better than in VTEC before (bottom lines).

Notably smoother - check out the VTEC transition.

Worth it? I think this graph says it all, but driving it is even better.

Awesome results. So what was ur VTEC point moved too? I can see you have gained a fair bit of mid range...how long did the tune take?

freakygeek
15-02-2012, 02:54 PM
Awesome results. So what was ur VTEC point moved too? I can see you have gained a fair bit of mid range...how long did the tune take?

Yes the midrange is definitely noticable from the drivers seat. Especially accelerating in 4th and 5th, you don't need to downshift as often in traffic/overtaking etc. VTEC engages at 5400 with full throttle, up to 5700rpm with part throttle (VTEC engagement window).

Time spent on the dyno around 4 hours plus miscellaneous time for setting up etc.

TweetR
15-02-2012, 04:58 PM
I purchased my S300 from the US as a complete unit with OBD2A. About $830 shipped. Keep your old ECU in the cupboard in case you need to return to stock for whatever reason / selling / etc.

My car made 125kW atw with Toda header, high-flow cat, RM01A and Mugen intake. With S300 tuned by Adrian @ Toda, it made 135.6kW atw. Noticable gains in the midrange, much smoother VTEC transition, definitely well worth the $$ spent. I regret not doing it ages ago.

The key is in the tune though... an experienced tuner will make your car reliable and economical on cruise, not just focus on dyno numbers.

Nice!!, I heard alot of good things about Toda and there tuning.. How much did that cost you?

u mad?
16-02-2012, 04:30 AM
135 with bolt-ons and tune

very healthy number!

infurNOS
16-02-2012, 08:38 AM
Yes the midrange is definitely noticable from the drivers seat. Especially accelerating in 4th and 5th, you don't need to downshift as often in traffic/overtaking etc. VTEC engages at 5400 with full throttle, up to 5700rpm with part throttle (VTEC engagement window).

Time spent on the dyno around 4 hours plus miscellaneous time for setting up etc.

Which spark plugs did you use? Any idea? I heard hondata recommend using resistor spark plugs with non resistor spark plug wires

freakygeek
16-02-2012, 10:39 AM
135 with bolt-ons and tune

very healthy number!

Yes, I am very happy with that!


Which spark plugs did you use? Any idea? I heard hondata recommend using resistor spark plugs with non resistor spark plug wires

NGK IFR7G-11KS - Iridium.

IV73CI
16-02-2012, 12:38 PM
Yes, I am very happy with that!



NGK IFR7G-11KS - Iridium.

Is like $24each.


There is also the

BKF7G-EIX - Iridium plugs

Something or rather

Jdmyard sells em cheap! Under $60 the set

infurNOS
16-02-2012, 01:01 PM
So i cant use my normal BCPR6ES-11 or what the service manual says?

IV73CI
16-02-2012, 01:15 PM
So i cant use my normal BCPR6ES-11 or what the service manual says?

you can,

that is the normal copper tip/design. good for 5-10k of use / change intervals.

otherwise the above weve mentioned are Iridium plugs, therefore you can get more K's and less change intervals compared to the copper materials.

Iridium plugs = 120-150thou k's

but yet again will all depend on how u drive, mods, conditions. but Iridium seems like FTW at less than $60...compared to $90+ dollars.

where as the copper is $7 (+/-) a plug...you work out the maths.,

freakygeek
16-02-2012, 01:45 PM
Manual says PFR-7G11S (Platinum).

Not sure how much difference there is between the BKR and IFR plugs, but the IFR were only slightly more expensive so I went with those...

IV73CI
16-02-2012, 02:09 PM
Manual says PFR-7G11S (Platinum).

Not sure how much difference there is between the BKR and IFR plugs, but the IFR were only slightly more expensive so I went with those...

iridiums vs platinums

they both have their pro's and cons depending on the type of application used.