How much timing are you running on pump gas?
02-01-2011 | 03:42 AM
#25
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From: Tahlequah/Norman, OK
It was around 10 or 11 lbs. We couldnt get the boost any lower with the gate spring I had. Tried to lean it out a little and power fell. I didnt want to make a ton of pulls on the stock tranny, and havent made a wot pull since the dyno, thats why I wasnt as concerned. When I get a tranny in and a small enough spring to run my mbc then I'm gonna worry about dialing the tune in up top. The truck has alot left in it thats for sure.
02-02-2011 | 12:47 PM
#27
Do you have the dyno graph? Looks like torque must have been falling off pretty hard up top. 490 isn't a bad number for torque at all, though. I run 16 degrees with meth on 10-11psi, running rich in the low-mid 10s. It's a work in progress.
02-03-2011 | 02:26 AM
#29
I can't make heads or tails of that dyno graph..
EDIT:
Ok, I studied a little harder...
That AFR is retarded. It comes in at 11.4 and just nose dives throughout the pull. It should be at 11.4 the whole time. It shows you at 9.4 at the top of your pull. There is probably enough raw fuel in your exhaust to start a fire in your tail pipe, fast and the furious style.
I've also never seen a dyno hp and tq cross at such a low rpm. In fact I thought it was always supposed to be at the 5,250rpm mark.
I don't understand why when you pulled fuel to lean it out you lost power. I'd think as fat as that thing is you'd pick up a ton of power going from low 9's to low 11's AFR.
Get that tranny in and get it back on the dyno for some tweaking. I'd almost be afraid of washing the cylinders with all that fuel. I know you said you haven't gone WOT since the dyno, just sayin...
EDIT:
Ok, I studied a little harder...
That AFR is retarded. It comes in at 11.4 and just nose dives throughout the pull. It should be at 11.4 the whole time. It shows you at 9.4 at the top of your pull. There is probably enough raw fuel in your exhaust to start a fire in your tail pipe, fast and the furious style.
I've also never seen a dyno hp and tq cross at such a low rpm. In fact I thought it was always supposed to be at the 5,250rpm mark.
I don't understand why when you pulled fuel to lean it out you lost power. I'd think as fat as that thing is you'd pick up a ton of power going from low 9's to low 11's AFR.
Get that tranny in and get it back on the dyno for some tweaking. I'd almost be afraid of washing the cylinders with all that fuel. I know you said you haven't gone WOT since the dyno, just sayin...
Last edited by 1SlowHoe; 02-03-2011 at 02:42 AM.