lart951

Went to the dyno today trying to tune my car for 23psi, but it was such a pain in the butt because of a rich spot @ 4k rpm that went below 10:1 a/f ratio. I finally got a decent a/f around 21psi. It is obvious that a new set of chips and MAF is needed to try higher boost levels.

Dyno sheet



video of the dyno


video of the vdo boost gauge @ 21psi


Video of a 40-120 mph run granny shifting style.

95Juan

Rogue_Ant

For that much boost and pump-gas I would want to be a little richer, IMO.



Rogue

schnellfahrer

I LOVE videos!!

lart951

I run 20-25% xylene all the time so I should be safe I hope.

Rogue_Ant

Ahh, I should have asked


Rogue

special tool

Where is the video, cholote????


Maybe now you will consider what we discussed.

lart951

I think it was a miracle that i didn't blow my car that night when I raised the boost to 23psi. Today there was a rich spot at 4k that took me an hour to get straight . I will get the new chips and MAF for christmas and I will tune for 22psi.

ehall

nice run lart.

Guns951

Good job man, congrats

RolexNJ

Good job Luis. How about MAF & Chip --- > Vitesse Racing

Ian Carr

lart, i would be interested to see the festiva vs your car 40-110. You did 40-110 granny shifting 3rd in about 12 seconds, i did 40-110 in just about 12 seconds granny shifting 3rd as well.

http://videos.streetfire.net/video/3...8c011f1b08.htm



congrats also on the dyno

hally

Nice numbers - Whats your current piggyback, how come u can't pull fuel?

lart951

ehall, guns and rolex, thanks.

Ian, I think I might have made a mistake it wasn't 40-110 but 40-120 shifting about 5800 rpms.

Hally, I am using the pro-M maf aka Lindsey digital maf, when making changes I have to guess the rpm range that I want to change.

RKD in OKC

1st off Nice sheet.

I have the Super 61, Dual port wastegate, MBC, Authority MAF, Mafterburner, 48# injectors, LR chips, 4 inch exhaust, Stage 2 intercooler, and Stage 2 head. Headers and crossover are stock. My dyno runs at 16, 18, and 20 produced 350, 375, and 400 rwhp respectively.

I think you should be able to get more power with chips tuned for your MAF and shouldn't have to replace the MAF. When LR was tuning my car they hit a 350 hp wall and were able to tune it out with my now outdated chips and MAF using the MAFterBurner, Adjustable FPR, and sizing injectors to work at closer to stock fuel pressures at the higher output levels.