off to the dyno!

[blownstang]

Had the Vortech installed by Dean's Performance yesterday. Leaving to have Tim at Mr. Norm's garage tune the car. Any predictions?

V1 S trim 3.6 pulley
KMS Powerpipe
Accufab Plenum/70mm tb
ARH longtubes
ARH catted x
JBA catback

Click to read more...

 

[Zack]

Its gonna make enough to wish you bought a Cobra instead. J/K!

About 410/395?

 

[01bluesnake]

good luck with the dyno, i say 375whp

 

[FirstWorldProblems]

stock 2v? i say 390

 

[bmxer89]

385

 

[blownstang]

Just got back. It made less than what I expected. I was hoping for 380-390rwhp and around 370rwtq. The car is making 9psi and initial timing is 15.75 degrees and gradually drops down as the iats start to rise. If I remember correctly I think it gets to about 12 degrees when the iats hit 200. So it made 356/371. Tim thinks that I may have a clogged catalytic converter because the car has fuel and is building boost, but doesn't make any more power after 5300rpms. The curve just goes flat. A/F ratio is 11.5 across the board. We're thinking of hollowing out the cats and throwing it back on the dyno to get that extra 20-30rwhp. The torque number is there, but the hp needs to come up. Any other ideas or suggestions?

 

[FirstWorldProblems]

stock 2v with stock heads (and manifolds?), doesn't really surprise me.

 

[batman]

need to open up that exhaust...

 

[blownstang]

stock 2v with stock heads (and manifolds?), doesn't really surprise me.

I listed the parts in the original original post. Longtubes and plenum/tb. The horsepower numbers are low. Car should be in the 370's at least. It doesn't hit 9psi until 6,000rpms, but the hp curve goes flat from 5300-6100. Tim showed me a graph from a stock 2v where they put a Vortech with a 3.6 pulley on it. On 7psi the car made 346rwhp, but the curve kept climbing till 6,000rpms. It is not normal for my car to only make 10rwhp more when I have 2psi more and longtubes/plenum/tb.

 

[FirstWorldProblems]

I listed the parts in the original original post. Longtubes and plenum/tb. The horsepower numbers are low. Car should be in the 370's at least. It doesn't hit 9psi until 6,000rpms, but the hp curve goes flat from 5300-6100. Tim showed me a graph from a stock 2v where they put a Vortech with a 3.6 pulley on it. On 7psi the car made 346rwhp, but the curve kept climbing till 6,000rpms. It is not normal for my car to only make 10rwhp more when I have 2psi more and longtubes/plenum/tb.

No it is not. I agree with getting rid of the cats, good luck!

 

[qwik01cobra]

Thats right in the area of what my 2 valve made. I dont see anything out of the ordinary. With just some Comp 270 cams you would have been 450+ hp.

I would never have a forced induction car with cats... I would think your could make 10-15 more hp without them but nothing to crazy.

 

[blownstang]

Since its making 9psi, that's exactly what we'll be looking for. Another 15rwhp would be just right. 371/371 would look good.

 

[Tim]

who cares about dyno numbers. Take it to the track and see what it runs.

 

[serb82]

Not to bad, my stock block with a kenne bell tuned around 11.7 afr range put down 450 hp/ 470 tq.

 

[blownstang]

Spoke with Nick at ARH. Seems this is common on supercharged Mustangs with cats. He said that the only way to damage his cats would be to overheat them where they actually start to melt a little. 99% of the time this happens on the dyno or from a rich condition. It will be visible once the x pipe is pulled off. I'm going to try and pull it off in the next few days and see if the holes on the inside look a little deformed or burnt.

 

[blownstang]

Cats are picture perfect. It is what it is. 356/371 for now.