Thread: 160whp dyno run with mods... whats wrong!

Originally Posted by Bio248

they don't do a whole lot of tuning of the wbodies there at LMT.

I know they do mostly corvettes but they are the only performance shop in my town that really deals with aftermarket parts. I cant really do mods myself since I live in an apartment with no garage...
He suggested i maybe check my fuel pressure to see if that is where it needs to be. I also thought I have bad O2 sensors since I am using the originals in my new exhaust system. I just hate to waste more money on parts that are not the problem.

He must have had his scanner config setup for another vehicle still. He needs go and download some 3800 configs

Originally Posted by SnowFlake

Another tuner who just regurgitates what the software says without basic fundamental understanding of how things work
If you were pegged at 4500 rpm your dyno curve and AFR curve would look much different.

I was thinking the exact same thing. I even said that it looks like the commanded AF from the PCM and not the actual. Because there is no way in hell it would be that flat and on the "lean" side. Even he was suprised he didnt see the AF curve rise after the injectors maxed going up to higher rpm.

Originally Posted by Jake U

I know they do mostly corvettes but they are the only performance shop in my town that really deals with aftermarket parts. I cant really do mods myself since I live in an apartment with no garage...
He suggested i maybe check my fuel pressure to see if that is where it needs to be. I also thought I have bad O2 sensors since I am using the originals in my new exhaust system. I just hate to waste more money on parts that are not the problem.

1) you're kind of wasting your time there. just stay away from them. unless it has an LS in it, they're kinda useless for tuning.

2) you don't need a tune. you don't have anything done to the car. just drive it.

Well my car is getting 12mpg ish and is a complete bog in the 1000-2000 rpm range so I know I have a fuel trim or sensor issue. Not to mention the 160whp is low for HV3, and Headers.

How much hp do you think hv3/headers adds?

I would expect more than 4hp over stock

I thought hp loss though the drivetrain was usually 20% which a stock 200hp car would be 160whp.

Just buy hpt and do your own tuning with help from guys on here...lots of info on here and the hpt forum...there is hpt and dhp forsale in the classifieds


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Originally Posted by Jake U

I thought hp loss though the drivetrain was usually 20% which a stock 200hp car would be 160whp.

Same thing with GXP's HP at the crank is 303 however Dyno bone stock is about 250whp

Originally Posted by Grimsin

So if a n/a only make 135-140whp and a l67 makes 190-200whp the supercharger makes 55-60 whp?.
Doesnt sound right...

It kinda does, GM rated the L36 @ 200 and L67 @ 260

I thought L36's dynoed at like 140ish so if l67 did 200ish then it would kinda make sense, I think im confusing myself or completely wrong lol
Edit saw snowflakes post, makes sense then. Cuz the m90 is kinda poo.