Something has got to be wrong here. I need help!!! Mods are in sig.


Here's a video of the dyno runs.

 

Sounds strong...does it feel okay on the street? Auto transmissions and dynos don't always get along, so I'd not put much stock in those results.

 

Yeah i realize that. Just seems like it should have been in the 385rwhp/350rwtq range.

 

Who did the tune?

 

Why does the sample start over 5000? How much converter? Locked or unlocked? It looks unlocked.

 

seems somethings up i have a similar grind and i put down 400rwhp thru a 3500stall and 4.10s.

 

whats ur limiter set to?

 

what gear did they pull it in

 

I had a similar problem with my car never dynoed worth a **** but it felt good on the street finally found out I had a bad fuel injector replaced that and picked up 50 rwhp.

Good luck.

 

That sounds about right. I did a before and after dyno on my car. When I first got my car it was as stock as you could get, and i took it to the local dyno so I could see how much power I had to start from. Bone stock with a 4l60e it made 278 @ the tire. So with a cam only, if you made 336 rwhp you picked up a good bit of power. Thats over 50 rwhp.

 

Look at my sig... Now I am starting to wonder if there is a batch of bad ms4 cams.. ?????

I made 383rwhp and 325rwtq....

 

how did you know ?
and it didn`t show on the dyno?

wanna learn thanks

 

Ill try and answer all the questions as best I can. This is the first time Ive ever done any mods like this...first time Ive ever had anything on a dyno even. By the way, I was not the one operating the car during the dyno runs. OK. Here goes.

Redline Performance in Herculaneum MO did the tune.

I don't know why the chart starts over 5000 rpm. I honestly don't know where it should start. The stall is a Yank 3800 and I have 3:73 gears. Don't know if it was locked or unlocked. How can you tell the difference?

Not sure what the rev limiter is set at but the pull was stopped at 6600 rpm.

Im guessing they pulled it in 3rd gear???

Shouldn't the hp curve look different than that? I was expecting more of a jump at the beginning (like almost straight up), then level off w/ a gradual rise, and then peter off right at the end.

 

 

i put down 314/327 with just a lid, home ported TB, and 3.73's... somethings up

 

I'm betting your converter was unlocked .....I put down 336 with SI with my converter locked.

 

Its pretty low even with an unlocked convertor. The mods in my sig I made 370rwhp unlocked. There is something going on there.

 

I bet the pull was made in the wrong gear and the stall wasn't locked up as well. Is that shop a sponsor on this board? Do they have LSx experience? call and ask if the guy in the car happened to be looking at the speedometer, that should tell you what gear you are in. Take it to the track and see what's really up if everything else seems to check out.
Good Luck
AJ

 

am I looking at this right? The torque and horsepower curves don't intersect?

 

It's blowing through the converter or tranny.It just wasn't dyno'd right.I hope they street tuned it instead.