jg951

Guys, I'm disappointed after the shop that tune my car say he tune the car at a SAFE 18 psi and he only got 276 hp. First the engine is freshly build 2.5, light crank, super 60 turbo, 70 psi injectors, stage 1 head (lindsey), using a Electromotive TEC -S, 3 inch exhaust, tune with 93octane gas. Some people claim 300hp on stock engines adding chips. I'm I wrong??

Dutch944

There should be way more power from your engine than that! Use the search function for some dyno tests and you'll find enough cars with way more power than that!

PorscheDoc

I would start by doing a leakdown and compression test.

Oddjob

Did you do a stock baseline (before mods & rebuild) dyno pull on the same dyno for comparison? Dynos can be all over the map.

V2Rocket

276 at crank or wheels?

jg951

276 wheel

james6speed

That number is low considering your mods. Are you running the stock camshaft?

lee101315

Thats about 330 hp at the crank. How much torque? What kind of dyno was it?

I wouldnt be too concerned about chasing huge numbers on the dyno. Make sure your AFRs are good, and try a 60-120mph pull and see if it feels right.

Jeff951NJ

+1 on doing a leakdown and compression test but also make sure there are NO vacuum leaks first. Sorry to hear about the low numbers. I had the same thing happen to me I feel your pain.

racerxrick

as said dyno's are all over the place. Don't they typically put a correction factor in? Does the car feel stout?

When I had mine dyno'd the number initially closer to your number before he put in whatever correction he did.

I run a LR Super 60 and put down 299.8 rwhp at 14.7psi (also discovered some vacuum leaks at that time). Now running 17.5-18psi and leaks fixed

jg951

[QUOTE=james6speed;10226534]That number is low considering your mods. Are you running the stock camshaft?[/QUOTE

Stock crank cross drill and 274 cam (Lindsey)

jg951

The boost start to come at 2800 rpm, and it feels good. I haven't take it out on the highway.

jg951

I did a run dyno run few years ago and the number was 150whp, but it was all stock.
This time the shop end-up changing the spring on the wastegate to a 6 pound from a 15, he said it was doing 300 whp at 3400 rpm, boosting 18 psi. SO the Fuel/ratios where bad.
It idles better now. Had problem with a lifter which got changed for a new one but I can still hear the same ti-tic not all the time only from 1500-2500 rpm first to second gear.

jg951

It was a mustang dyno

Dougs951S

sounds like that dyno reads low if it was the same shop. a bone stock 951 should dyno ~190 whp, S's have been known to lay down 220+ at the wheels in factory trim. Also how did the car do 300 whp at 3400 rpm, but only pull 276 whp... I'm confused. I wouldnt be worried about it though until after you drive it. Take it for a spin, if the car pulls hard down worry about it. Also, are you still using the AFM or have you gone to MAF? 300 whp isnt bad if you are still on the afm..