Header and Test Pipe/Highflow Cat.

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Jan 12, 2011 | 11:31 AM

#41

H22toF20

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Joined: Mar 2010

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From: Clatskanie, OR

Quote:

Originally Posted by gernby,Jan 12 2011, 06:55 AM

I haven't tried looking at the injector pulse widths to determine VTEC, but it doesn't sound as easy as just looking at the VE tables to see where they would cross.

Pulse width should follow the torque curve for the most part. It would only work if it's fully tuned and you're trying to find the ideal VTEC cross-over. This is what I did with my H22 on S300 and it worked. It most likely wasn't down to the best 100th rpm but it was close enough for a very smooth cross-over.

Jan 12, 2011 | 01:21 PM

#42

Gernby

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Joined: Mar 2002

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Pulse width does vary with IAT, ETC, battery voltage, MAP, etc, so that variance could cause somewhat of a "miss" on the right RPM. That's why I use VE. If you've achieved a very flat AFR for both cams, and see where column 9 would cross for the 2 tables, that's the right spot for it.

Jan 12, 2011 | 08:22 PM

#43

H22toF20

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From: Clatskanie, OR

Quote:

Originally Posted by gernby,Jan 12 2011, 02:21 PM

Right. If done in the same day, around the same IAT then it should be really close. It won't be perfect, but it will be close.

Oct 1, 2011 | 11:39 PM

#44

Trackmonster >:-(@)

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Joined: Aug 2011

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From: Sea-town

Quote:

Originally Posted by AP2CRazy

Can one really benefit from just Header/TP/Flashpro? Seems like this will bottle neck without an exhaust. Though I am interested in this setup since an exhaust is not my thing.

You can run up to 300 whp on the stock catback! Its is quite free flow but would say for jus a header and test pipe and tune it is one of the best exhausts

Oct 2, 2011 | 02:21 PM

#45

nglaser

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Joined: Jun 2010

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Quote:

Originally Posted by Jrse7en

Excellent thanks!! I will be getting a header and test pipe along with Hondata and probably the PRM Intake. That should satisfy my power/sound needs. Sound system, springs and wheels/tires then the car is done.. Excellent! Thanks guys!

Car is never done !!!!!!!!!!!!

Oct 3, 2011 | 05:49 AM

#46

redwing497

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Joined: Mar 2011

Posts: 351

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From: North Jersey

What's the reason behind why VTEC engagement can be set so low with just a test pipe? How does that work? Not being a wise guy, just really curious. From my understanding, if you get Flashpro on a completely stock AP2, VTEC can't be set much lower than 5600 which I think defeats the purpose. How does adding a test pipe help that?