When does VTEC engage on a stock b16a2?

[vtecing]

Hey guys, wondering if you can tell me when vtec is supposed to engage on a stock b16a2? The exact point, not just "around 6.5k etc...

Thanks

[dougie_504]

5600rpm

[vtecing]

thank you! Unfortunately ozhonda wont let me rep you :( but you have my respect.. lol

[EKVTIR-T]

thank you! Unfortunately ozhonda wont let me rep you :( but you have my respect.. lol

Im sure he'd let you kiss his pinky ring instead mate

:D

[lilthug]

* only when engine is up to temp

[vtecing]

oh also can you tell me when it hits rev limiter?

[lilthug]

http://www.ozhonda.com/forum/search.php?do=process

[bboyzell]

Hmm im pretty sure that Vtec engagement on my B16a1 is at 4800rpm.
Then again been a few days since iv driven the car : /

[trism]

yeah, and this thread is about the a2 not the a1

[Izzy92]

As dougie 504 said, 5600 is stock vtec engagement.. Depending on if yur ecu is tuned or not, can get it lower.. And also yur revs should limit at 8,450 Rpm at stock..

[rubixcube]

wikipedia bro

B16A2
VTEC
Found in:
1992–2000 Honda Civic EDM VTisi (EG6/EG9 & EK4)
1992–1997 Honda CR-X del Sol EDM VTi (EG)
1996–1997 Honda CR-X del Sol USDM "VTEC"
1999–2000 Honda Civic USDM Si (EM1)
1999–2000 Honda Civic CAN SiR (EM1)
Displacement: 1,595 cc (97.3 cu in)
Bore×Stroke: 81.0×77.4 mm (3.19×3.05 in)
Compression: 10.2:1
Power: 160 hp (119 kW) @ 7600 rpm & 111 lb·ft (150 N·m) @ 7000 rpm
Transmission: Y21 or S4C
Redline: 8,000 rpm
Rev Limit: 8,450 rpm
VTEC Engagement: 5,600 rpm
Aluminum Casting
ECU Code: JDM P2T (square case) or USDM P30 (regular case)
OBD2

[vtecing]

Cheers guys. That's all I need to know :) I have an engine running a vafc and just wanted to check to see what stock settings are to see if these are different

[MIKO_OL]

As dougie 504 said, 5600 is stock vtec engagement.. Depending on if yur ecu is tuned or not, can get it lower.. And also yur revs should limit at 8,450 Rpm at stock..

Learn something new everyday !

[seancrx9]

So does that mean the car has been tuned if Vtec kicks in at 5000rpm? Chipped? etc....

[dougie_504]

Yeah, tuned or cheaply adjusted with a VAFC or w/e, chipped.

[IV73CI]

Its bad to change the vtec engagement point unless you have the supporting mods like a tuneable ecu and not just a vtec controller/vfac etc.

This fcks up the ignition/fuel maps and will cause strain on your motor/heads rather than giving you power.

Others ive seen even destroyed the motor due to detonation/pinging, running too lean/rich etc.

Dont change it unless u got a tuneable ecu and matching mods to suit.

Back to OP..

VTEC EP is 5600rpm low cam lobe then 5890-6000rpm for the high cam lobe.

[CRXDEL501]

Its bad to change the vtec engagement point unless you have the supporting mods like a tuneable ecu and not just a vtec controller/vfac etc.

This fcks up the ignition/fuel maps and will cause strain on your motor/heads rather than giving you power.

Others ive seen even destroyed the motor due to detonation/pinging, running too lean/rich etc.

Dont change it unless u got a tuneable ecu and matching mods to suit.

Back to OP..

VTEC EP is 5600rpm low cam lobe then 5890-6000rpm for the high cam lobe.

:thumbsup::thumbsup::thumbsup::thumbsup::thumbsup:


:thumbdwn::thumbdwn::thumbdwn::thumbdwn: to shitty vafc crap

[seancrx9]

How do I find out what has been done to my delsol. Vtec engages at 5000rpm. Visually I cannot see any Vtec controllers or VAFC thingy's.
Where is the computer located. If I have a look their do you guys think i'll find something?
What's EP and Lobe crxdel501?
I'll post some picks asap.

Thanks!

[ECU-MAN]

open your ECU and see if it has been chipped,

if its stock your tacho is out

[IV73CI]

How do I find out what has been done to my delsol. Vtec engages at 5000rpm. Visually I cannot see any Vtec controllers or VAFC thingy's.
Where is the computer located. If I have a look their do you guys think i'll find something?
What's EP and Lobe crxdel501?
I'll post some picks asap.

Thanks!

As ecu-man said,

Open up your ecu and inspect. Have a look at the rom chip and see if there is any sticker on it.

Also look at the socket solders that holds that rom and see if it has been resoldered.

Ecu is located on the passenger kick panel behind the plastic cover.

EP = Engagement Point
Lobe = high and low or exhaust and intake camshaft profiles if its a DOHC VTEC.

[seancrx9]

Ok.............! Just got home and straight to the passenger kick panel.

VERDICT..............

1 X SUPERCHIPS Badge/computer resides in my sol.

Never heard of it before. Did a search, seems it's americal FL or UK 30years experience?
Anyone know what I may have?
Is it tuneable?
Who can tune it in Melbourne?
What's it worth?
It it anygood?
etc.
Car is surprising me as I didnt even realise that there was a full Apexi exhaust hiding underneath it until
I drove it home. Not sure what headers as alloy cover hides any badges that may be visable.

Many thanks again.

[IV73CI]

Ok.............! Just got home and straight to the passenger kick panel.

VERDICT..............

1 X SUPERCHIPS Badge/computer resides in my sol.

Never heard of it before. Did a search, seems it's americal FL or UK 30years experience?
Anyone know what I may have?
Is it tuneable?
Who can tune it in Melbourne?
What's it worth?
It it anygood?
etc.
Car is surprising me as I didnt even realise that there was a full Apexi exhaust hiding underneath it until
I drove it home. Not sure what headers as alloy cover hides any badges that may be visable.

Many thanks again.

Pics of ecu yo??

P28/30??

[seancrx9]

What are he visual differences between the 2 cpu's? Do they look different by looking at them or is there a code that distinguishes the two?

[seancrx9]

P28=soch vtec
p30=dohc vtec

Am I right to say this?
Mine is DOHC Vtec and has a "Superchip" Badge stuck on it.

[ECU-MAN]

doesnt matter what the ECU is, its the chip that gived the ECU the engine Identity and functionality as long as the ECU has been prepaired correctly.

If you have a CHIP tuned in the US or EU I wouldnt expect it to work the best here. If the Chip is in a socket then yes your ECU is tunable.

[IV73CI]

Open up the ECU and see if you can see the ROM chip. if its removable, then u can upgrade the chip to a S200 socketed.

otherwise - get an OEM (non modified rom chip) and put it back in, then install a S300 kit onto your ECU ..

fcuck that superchip off and hondata ftw!

[VT3C]

PM ECU-MAN and ask if he can sort you out with an AUS P30 programmed chip then throw that superchip thing in the bin.

the stock ECU programs are quite good for i/h/e mods.. you will get MORE power with a good tuner and a programable ECU but these ECU's arent bad on their own. He who bags a VAFC has obviously never used one - they are quite good for what they are - again they are not as good as a full stand-alone ECU but bang-per-buck i've seen 15-20WHP gains on stock EK4 that just had a pod filter and cat back.

FYi:

OBD-0 JDM B16A gen1 ECU: (cant remember the code) VTEC 4800 revcut ~8200. (VTEC here already ? you're early, dinner still in the oven)
OBD-1 JDM B16A gen2 ECU: P30-J00xxxx VTEC 5800 revcut ~8400 (where the hell is VTEC? hello ?? BRAAP ohh there it is)
OBD-1 AUS B16A2 ECU: P30-G00xxxx VTEC 5500 revcut ~8200

MODS: can we add a sticky to the technical section that says "Accept the fact that a stand-alone programable ECU is always going to have more potential to make power over a piggy-back ECU or stock ECU... if you have a competant tuner at your disposal"

perhaps this would help not having to have the same posts and arguments each time anyone asks a question about ECU's LOL.

[seancrx9]

so.... you mean this Superchip has been installed and has downgraded the power and response of my car? So standard ecu will be better off?
What's a Hondata s300 insatlled and tuned going to cost?

[rubixcube]

so.... you mean this Superchip has been installed and has downgraded the power and response of my car? So standard ecu will be better off?
What's a Hondata s300 insatlled and tuned going to cost?

500 ish for the s300, 50-100 to install it, $150-200/hr to tune it. Best to install heaps of mods and tune it once rather than adding and tuning and adding and tuning etc

[IV73CI]

Dude ..

The price you quote is maybe a 2nd hand item and the tuning for that price is only a top up tune.

S300 new =800-1100 with ecu/s300 onboard.

Full tune = 400+

[ECU-MAN]

so.... you mean this Superchip has been installed and has downgraded the power and response of my car? So standard ecu will be better off?
What's a Hondata s300 insatlled and tuned going to cost?

yes possibly the tune of your superchip could be degrading your performance. To prove it you would have to go to a Dyno Day and do two runs, 1 with the SuperChip and another with a stock ROM.

you can simply remove the SuperChip chip and insert a stock ROM.

[IV73CI]

^^ what he said.

RUN1 = Supacrap Chip
RUN2 = OEM Chip

OR borrow someones P30 ECU and do the 2nd run using that ecu and see what the power differences are.

Power runs are generally around 60-80 depends on whos running the show!

[seancrx9]

lol....!

Thanks guys for great information. This thread helped me identify that I had a chip in the car that I didn't even realise even though it
might even be supcrap! bahaha....
To be honest. It drives excellent and pulls really hard. @5000rpm and keeps going to 8000rpm
Definately need to do a dyno run.
Still love my D series ZC in my gen2

[VT3C]

the chip might be OK, it might be really good.. but as it's unknown and from a generic brand that deals with everything from Diesel Landcruisers to Fiats, i would have little faith in it.

I am surprised nobody out there has done an ECU comparo in a climate controlled dyno booth.. same car, same conditions, same mods.. only difference is different ECU's.. 3 runs per ecu averaged out.. a stock AUS P30 versus a JDM P30 versus sPoon N1 versus Mugen N1 etc.

[ECU-MAN]

I have done such a test,

stock AUDM ECU v JDM ECU the JDM ecu had +3KW at the wheels

[IV73CI]

I have done such a test,

stock AUDM ECU v JDM ECU the JDM ecu had +3KW at the wheels

I would assume the JDM had the extra KW due to the ign/fuel mapping. Saying that they had same engine, mods etc etc?

[VT3C]

that's about what I expected ~5-10WHp max.
do you still have a dyno chart of this one ? interested to see AFR's and torque through the midrange.

[snk99999]

U need oil presure to engage the vtec.

So do not pull to high rpm when u just start the engine.

[ECU-MAN]

ECU wont allow you to engage VTEC with a Cold Engine


VT3C

I would have to have a good look for the chart, I do recall posting it up here in about 2004, have a search

[IV73CI]

ECU wont allow you to engage VTEC with a Cold Engine


VT3C

I would have to have a good look for the chart, I do recall posting it up here in about 2004, have a search

Wow 2004..

You must be as fossil as me.. Lol

Only diff is i couldnt save my original username due to my prev ISP email acc is goneskies..