I put my car in the shop to have 24lb inj,255lph fuel pump,75mm maf,and a custom Diablo chip installed. Before these parts my car dynoed 290/304 to the wheels. After the parts were put on my car it dynoed 300/298 to the wheels. Should i have gained more than 10 horsepower with these upgrades? And why did i lose 6ft-lbs of torque? Should i have the car retuned and dynoed again?
Does this make sense?
- Thread starter Holik95
- Start date
Looking at the mods in your sig, I'd say you're pretty close to where you should be. The difference in torque could simply be a matter of varying conditions between pulls. I wouldn't be overly concerned by it personally, but if they'll retune it for free, go for it 
94gts
Member
Holik95 said:
Here are my thoughts
The chip ... it was burned from a custom tune while your car was on the dyno I assume
Seems like the torque should be a little higher
Can you post up the pull?
It would help if we knew about the fuel ratio and timing details.
If you are running the ped heads, you have the big chambers and compression is one thing that makes hp/tq all across the range.
Moving to the the 75 maf is not gonna give a huge gain.
Moving to the larger inj's/pump would not be a big gain thing as well. You were wise to give it more fuel
LT's would help but they would be more effective in the low to mid range.
When the e-cam was made, heads were not as efficient as they are now days. The typical cams in those days were all about crutching up the poor exhaust flow rates of those heads.
Having said that, you may could do better with a different cam
I don't claim to know a lot in that area
Grady
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