I really don't know where to start on how to explain this car. Basically I bought the car from a friend and my mods are in the sig. Never seen a wideband in its life until today! Initially at wot it was running 10.6. Well I had to fix this. Now running 11.5-11.0 (redline)
Upon tuning I started seeing KR 2-4* 5200-6000rpm. I had the AFR's perfect 11.5-11.6 at wot. Now I started taking away timing to see if it would drop the KR down which at wot it was set to 13-14*. I dropped it down to 11-12* with no change at all. So I decided to add about 2% of fuel from 9500hz up. Initially its hits 11.6 and the closer to red line it gets its right around 11.0. With the timing untouched I get around 1* KR.
I will post up logs/tunes below. Now my previous gtp had an s1x cam and headers and running 18* timing at wot with a 11.3-11.5AFR.
Do I need headers to run a 11.5AFR and more timing? Or even rockers as well to get to 15* timing plus???? Is this a normal characteristic?
I spent a good 2hrs with the below logs/tunes. I wont post them all but I did 14 changes pretty much bit by bit.
----Note--- I have the wideband in the crossover pipe as there is a bung in it.
Below are screen shots of what I can hopefully call progress.
Any help is appreciated!
First is the current tune
Second is the tune before me adding that 2% fuel.
Last is what I started with pretty much.
Here is a link to the hpt forum.
http://www.hptuners.com/forum/showth...-Regal-GS-223k!!!)
