Dip in torque curve

K-Series Programmable ECU Calibration updates / downloads
LK7R
Posts: 127
Joined: Wed Mar 05, 2008 12:48 pm
Location: Prague / Czech Republic
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Re: Dip in torque curve

Post by LK7R » Sun Jun 02, 2013 3:38 am

Dip at VTEC is normal wit OEM PRB cams. You can smooth it out a bit by rising VTC angle on Low cam just before VTEC.

My car was best around 13 to 13,5 AFR so i agree with Rikitaun on this.

Get a WB (PLX SM-AFR), do datalogs and tehn we can help you.

Nazul
Posts: 137
Joined: Mon Sep 24, 2012 8:15 am

Re: Dip in torque curve

Post by Nazul » Sun Jun 02, 2013 8:12 am

The dip is away with cleaning my ITG maxogen and especially by oiling it good.

Nazul
Posts: 137
Joined: Mon Sep 24, 2012 8:15 am

Re: Dip in torque curve

Post by Nazul » Sun Oct 27, 2013 7:58 am

Apparently heat wrapping my PLM header, which is a 2 part header, also helped in fixing it.

cukali
Posts: 37
Joined: Thu Apr 27, 2006 10:48 am

Re: Dip in torque curve

Post by cukali » Thu Jan 09, 2014 2:50 pm

Nazul wrote:But i believe my cams are at 30 degrees around those rpms.
I'll check when im home.
We believe the dip is from the 3 inch.
But i can test, normally i should feel the difference.

Your VTEC point is set too high. Try what Rikitaun suggested with the angles...he about dead on from what I get when tuning. Looks to me like they DIDNT tune each cam angle and left the stock angels in the cal. I see this WAY to often when looking at tuned Kpros from random shops.

BUT, without seeing A/F numbers first hand I cannot discredit the tune...just that the dyno sheet looks too familiar to me to pass on.

PM me the tune, I can tweek it and you me notice a big difference...if not then no harm.

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