smg944

iTrader: (34)

here is my dyno graph for today. runs were at 10-11psi. afrs are all over the place. trying to figure out why i am having a lean spot at 4700 rpms. i dumped an extra 20% of fuel in that area and it didnt help much. also i brought the timing back some. was wondering how much hp per degree of timing on average?

smg944

iTrader: (34)

also here is one of the earlier pulls after we worked out the rpm's. look at that wave at 4-5k.

crazyrx7

That is a weird dyno graph. Where did you get the map from? Here is mine for comparison. The green one is from my twins at 12psi a couple of years ago. The blue one is at low boost (10-11psi) and the red one is at 15psi. I'm running the same turbo as you.

http://i110.photobucket.com/albums/n...yrx7/Dyno1.jpg

R.K.

books

iTrader: (8)

Are you certain you leaned out the correct cells? Looking at your AFRs around 4,300 rpms, it appears that range was leaned out by 20% for the 2 runs posted.

smg944

iTrader: (34)

ill check again but im pretty sure its ok in that area. ill post up the fuel map.

RETed

Watch it...
The AFR's might be showing at 4,700RPM, but it's actually happening earlier in the RPM band.
It's probably 200...300...even 500RPM earlier.
Try messing with the fuel map slightly before 4,700RPM.

Also, if you using the DynoJet wide-band that you stick in the tailpipe, those things are notorious for not showing accurate AFR's.
Ignore the AFR's.
Just keep adding (or subtracting) fuel until the power maxes out.
When done, add just a tad more fuel to compensate for normal street loads and to keep everything safe.


-Ted

smg944

iTrader: (34)

here is the only way i could show the fuel map, click the link and open with word.