396 tune
Thread Starter
Burning Brakes
Joined: Nov 2000
Posts: 810
Likes: 3
From: Austria
396 tune
Hi all
i have nearly tuned in my 396, it consists aof AFR 210 heads, single plane EFI, 234/238 .565 112LSA cam, headers, 58mm TB
i had lean backfire at the beginning, but i managed to tune it out via VE tables and the "delta" values..(Accel Enrich vs........)
the car runs wonderful in upper rpm regions, say about 2500rpms up, but i have some low throttle/part throttle issues...
eg. when crusing at 40mph with 4th it doesnt run really smooth, it bogs a bit from time to time..nothing bad, but a bit annoying
can you help me, where to look at?
thank you
i have nearly tuned in my 396, it consists aof AFR 210 heads, single plane EFI, 234/238 .565 112LSA cam, headers, 58mm TB
i had lean backfire at the beginning, but i managed to tune it out via VE tables and the "delta" values..(Accel Enrich vs........)
the car runs wonderful in upper rpm regions, say about 2500rpms up, but i have some low throttle/part throttle issues...
eg. when crusing at 40mph with 4th it doesnt run really smooth, it bogs a bit from time to time..nothing bad, but a bit annoying
can you help me, where to look at?
thank you
Le Mans Master
Joined: Feb 2005
Posts: 5,146
Likes: 3
From: The Motor City
Look at where the problem at cruise (rpm and kpa) is in your datalog. Look at the kpa vs/rpm on the lower ve table, you will probably have to lower the values in that area for 4th(approx.30-40 or lower kpa range I would guess). Same would apply for other areas in closed loop below 2k.
Last edited by mseven; Sep 12, 2006 at 02:59 AM.
Drifting
Joined: Apr 2003
Posts: 1,379
Likes: 4
From: rome ny
on open loop tune would be much easier to get right. you have a pretty hefty cam and might give you problems tuning.. i had the same problems with mine and fooled with it for a month with little luck, not saying it cant be done. that said, try to force open loop and tune the ve tables with a wideband. always works for me.
i have a bin for you if you want to try it. timnig made need to be tweeked for you motor but the tables may be close. for a mini ram 383 zzx cam.
i have a bin for you if you want to try it. timnig made need to be tweeked for you motor but the tables may be close. for a mini ram 383 zzx cam.
Last edited by mos90; Sep 12, 2006 at 11:17 AM.
