[2Triple0SI]

My vtec kicks in at 5000rpm but doenst really pull at all untill 6500.....Is that normal?....I road in my friends '97 prelude and it kicked in and started pulling hard. Should mine do that? THX.

 

[gurusan]

Yeah its normal. If you look at a dyno chart of a stock b16 after 5500 the power really picks up...its peak power is around 7600-7800 RPM.

Also..why is your vtec lowered to 5k?

 

[killer B]

ya, that's what i was thinking.....unless you've had it tuned to engage at 5k. it should be kicking in at 5500rpms.

 

[2Triple0SI]

Your guess is as good as mine...I have an apexi vtec controller but I didnt put it on there.....I think the person that had it before me got it and just screwed around with it...What do you think the best setting would be to get the most power?

 

[gurusan]

5500 rpm without debate.

 

[2Triple0SI]

5500 rpm without debate.

Ok, ill change it to 5500 then...And one more thing. I was reading about vtec the other day and someone said the stock tac is usually off from the controller settings...Is that true?

 

[gurusan]

The stock tach has a tendency to be off at very high RPMs...but mine is on 100% and so is my friends' Si. I think people exaggerate.

 

[Targa250R]

My vtec kicks in at 5000rpm but doenst really pull at all untill 6500.....Is that normal?....I road in my friends '97 prelude and it kicked in and started pulling hard. Should mine do that? THX.

Set your VTEC back up to 5500 RPM where it belongs.

As for your friend's car, the H22A4 has the VTEC engagement set too high from the factory and therefore suffers losses in the torque curve just prior. This is why there is a noticeable change in the Prelude's torque curve once VTEC engages. Lowering the VTEC engagement point for that particular engine will smooth out the curves.

 

[2Triple0SI]

The stock tach has a tendency to be off at very high RPMs...but mine is on 100% and so is my friends' Si. I think people exaggerate.

Ok, thx for the help.

 

[gurusan]

np that's what we're here for.

 

[killer B]

Your guess is as good as mine...I have an apexi vtec controller but I didnt put it on there.....I think the person that had it before me got it and just screwed around with it...What do you think the best setting would be to get the most power?

be careful with VTEC controlers......if not tuned right they can destroy a motor. my brother-in-law put one on his 99Si.......and didn't have it tuned right and it through a rod through his block from not being set right. so be careful.

 

[2Triple0SI]

be careful with VTEC controlers......if not tuned right they can destroy a motor. my brother-in-law put one on his 99Si.......and didn't have it tuned right and it through a rod through his block from not being set right. so be careful.

Yea, well there is a honda tuning shop that can fix it up for me so im gonna let them get it all back to normal.

 

[crapinmypantscivic]

Yea, well there is a honda tuning shop that can fix it up for me so im gonna let them get it all back to normal.

Good call, trust no one

 

[SmurfedOutCivic]

my tach was off at high rpms also

 

[ChewiSi]

Set your VTEC back up to 5500 RPM where it belongs.

As for your friend's car, the H22A4 has the VTEC engagement set too high from the factory and therefore suffers losses in the torque curve just prior. This is why there is a noticeable change in the Prelude's torque curve once VTEC engages. Lowering the VTEC engagement point for that particular engine will smooth out the curves.

that and the H22 does have a bigger motor hence more torque and hp.

 

[2Triple0SI]

that and the H22 does have a bigger motor hence more torque and hp.

Yeah they def. have a bigger motor and vtec is about as loud on it as it is mine..I wouldnt mind havin an h22 swap myself. :btu

 

[syntetyc]

I Wonder

Since you've been talking about when Vtec kicks in, I would like to share something. I have a '96 coupe LX with a 90' B16a Swap (weird, i know), controlled by a PW0. It's supposed to all be working fine but my Vtec enters at different RPM's each gear.
1st- 4,500
2nd- 5,300
3rd- 5,800 ...and so forth.

My engine does not limit. I can take it up to 9k with out a problem.
Now I ask you gurus, how's this possible?

 

[2Triple0SI]

Since you've been talking about when Vtec kicks in, I would like to share something. I have a '96 coupe LX with a 90' B16a Swap (weird, i know), controlled by a PW0. It's supposed to all be working fine but my Vtec enters at different RPM's each gear.
1st- 4,500
2nd- 5,300
3rd- 5,800 ...and so forth.

My engine does not limit. I can take it up to 9k with out a problem.
Now I ask you gurus, how's this possible?

Well ive read that there are actually 10 different vtec settings.....2 each gear for engagement point and disengagement...So that could be why.

 

[J_fukin_t]

Yea, well there is a honda tuning shop that can fix it up for me so im gonna let them get it all back to normal.

y your at it have them take it off, i'm not a huge fan of them things

 

[2Triple0SI]

y your at it have them take it off, i'm not a huge fan of them things

Well I did consider taking it off and just selling it...Kinda seems like its more trouble than its worth.