Ok... Here we go again!

[05xgt]

I've searched here and a dozen other places , but can't find an answer. FINALLY got a base line last night and gotta say not real impressed. Though it was 90 deg, 85-90%, not sure what the Baro press was, but anyway on a Mustang Dyno it made 369 rwhp, and 374 ft lbs respectively. Now my question is, when trying to determine HP maximum should it be measured at the wheels or at the crank, ( BHP )? I know the 4.6 3v is at the edge of the envelope at 450-460 HP., but is that at the crank? Or at the wheels? Also are those numbers based on a mustang Dyno or a Dynojet Dyno? Oh yeah the operator also did a 1/4 mile sim pass. It ran a 12.96? Something is def wrong right there. I've driven it faster than that at the track N/A! My mods are Saleen blower at 8-9 psi, hot rods, mild head port, 39lb injectors, 1 1/3" primary LTs, KB BAP, Saleen extreme CAI, meziere elec WP, no cats, 410 gears. I'm guessing it shoul be in the mid to low 11s? At 450-475 rwhp? Idk! Gets frustrating when you see gaymaros with a blower, tune and intake making 425+ in the same conditions.

 

[808muscle]

Measured at the wheels. And fuck the Dyno, take it to the track and your mph will tell you the power your making.

 

[skwerl]

That's about where I was when I first got my M90 with the stock pulley, 5 lbs of boost.

And HP is always measured at the wheels unless you're a car manufacturer trying to make your product sound impressive.

 

[white_lightning]

I made 387rwhp/390rwtq at 8 psi on a mustang Dyno. I don't think it's way off.

 

[muztangman93]

Sounds low to me I had a powerdyne at 6psi make 400rwhp. I would think 8 to 9 psi should be at least 425 to 450

 

[BruceH]

I've searched here and a dozen other places , but can't find an answer. FINALLY got a base line last night and gotta say not real impressed. Though it was 90 deg, 85-90%, not sure what the Baro press was, but anyway on a Mustang Dyno it made 369 rwhp, and 374 ft lbs respectively. Now my question is, when trying to determine HP maximum should it be measured at the wheels or at the crank, ( BHP )? I know the 4.6 3v is at the edge of the envelope at 450-460 HP., but is that at the crank? Or at the wheels? Also are those numbers based on a mustang Dyno or a Dynojet Dyno? Oh yeah the operator also did a 1/4 mile sim pass. It ran a 12.96? Something is def wrong right there. I've driven it faster than that at the track N/A! My mods are Saleen blower at 8-9 psi, hot rods, mild head port, 39lb injectors, 1 1/3" primary LTs, KB BAP, Saleen extreme CAI, meziere elec WP, no cats, 410 gears. I'm guessing it shoul be in the mid to low 11s? At 450-475 rwhp? Idk! Gets frustrating when you see gaymaros with a blower, tune and intake making 425+ in the same conditions.

What was the a/f and spark advance? Did you happen to log fuel source, torque source, or spark source? What tune are you running?

 

[05xgt]

Didn't log anything ie timing, fuel curves, AF, etc. this was a last minute thing. Sadly its a data logged tune that's 90% complete. Just can't find anyone in the Houston area who's been able to get it right. Been to three of the supposed best. May just try one more and if it doesn't work out, just call it a day and go get a Z06. Lol the only thing keeping me from going to one of the best (IMO) is Brooks in Fla.

 

[muztangman93]

What about lito on here. Id imagine it would be pretty simple for him to do. Also if your talking about Eric Brooks He does remote tuning.

 

[BruceH]

Didn't log anything ie timing, fuel curves, AF, etc. this was a last minute thing. Sadly its a data logged tune that's 90% complete. Just can't find anyone in the Houston area who's been able to get it right. Been to three of the supposed best. May just try one more and if it doesn't work out, just call it a day and go get a Z06. Lol the only thing keeping me from going to one of the best (IMO) is Brooks in Fla.

I think you are jumping the gun here. Wait until the tune is complete before getting concerned with numbers. I also wouldn't be going wot unless the tuner cleared it first. More than likely your open loop is still fat and spark is fairly low while the tune is getting finalized. Specifically the maf xfer. You could easily have a significant amount of power left in the combo.