your Inputs please
 

Hi guys,
I took my car the do the uprev. when dyno the car, it deviled 230 HP which is very low.
the car has (Stillen headers, Nismo cat back system, K&N typhoon air intake, and last thin I installed is MOTORDYNE M370 Intake Manifold)

What do you think is wrong. The uprev tech said it might be the catelac converters. Because I have stock? Could it be the problem.

I will install MOTORYDYNE ART test pipe.

What do you thinks guys

Make sure the M370 intake manifold is installed correctly and with a good seal. I lost nearly 100whp on a bad install and had to get it corrected. It will sound very very different from anything else if it's the case. Also what type of dyno is it, what was the daytime temperature, and at what elevation were you at? Stock cats would not be the culprit. They are restrictive, but not that restrictive.

Thanks SS_Firehawk,
I will tell them to check it. And change the seal.
Thanks Ali

Do you have a dyno graph to post that we could look at? Also is there before and after numbers?

I agree with Firehawk, something is off, even for a low reading dyno thats REALLY low...

I will try to get soon.
I will take my car from the tuning garage today.