just because one 35r made 700hp. does not mean they all will. i beleave many people feel a few things are being left a secret......

 

Interesting

 

DB enquiring minds want to know!

ok maybe it's just me

You must feel like a politician sometimes having the peanut gallery here trying to poke holes in everything you do. Just remember most of the time it's just enthusiasts trying to figure what is and is not possible.

 

Dave, What compression are you running in the white car?

-Em

 

I would say your acceleration enrichment settings might need some adjustments to fix your varying A/Fs based on engine load. I've had the issue of going lean on the street from the dynojet tunes. To fix the issue, I retuned on the street in the higher gears and then adjusted the acceleration enrichments to keep the A/Fs right under all load conditions. When the settings were right, the A/Fs were rock solid in every gear and on the dyno.

Dave, do your A/Fs also richen up in the lower gears? Because the lower gears would have the same reduced load which would likely cause the same changes in A/Fs that you see on the dyno.

As for the drag car picking up ~20% HP on the dynojet, it probably has more to do with the typical dynojet capabilities. I've seen several say that the dynojet "error" starts to get high above 700-800 HP, the differences seem to be very noticeable up there. The differences in measurement styles of the different dynos is the real cause though so this idea you can add some percentage to mustang numbers to get dynojet numbers is ridiculous.

 

Congrats Dave! The higher you get the better I feel about me getting a HTA35R.

If you can spin a 2.3ltr to 10,000 rpm then it should maybe equal. Maybe. Too bad we can't.

 

I'm sorry I don't understand what your saying. Stroker should always yield more torque than the 2 litre all thing beeing equal. That was my point.

Not sure what your point is. I could care less if I can spin my motor to 10k. You'd need a GT42 or similar size turbo to need those kind of revs.

 

Well they aren't eqaul. At least you can stop spinning a 2.0 at 7500-8000 and see where the HP/TQ levels are, then do the comparison. But then you'd be cutting the 2.0 short of it's capability. You could spin the 2.3 ltr to 10,000 to get to the limit of a 2.0 and do a true comparison to see if the 2.3 ltr can make more TQ than a 2.0, but the 2.3 ltr can stay together that high. Since turbos like RPM, it would seem that the 2.0 would be the better choice to make higher HP\TQ numbers up top.

 

Peak torque was at 5600 and would be even sooner on a stroker, so what does being able to rev to 10k have anything to do with peak torque

 

No but it means that the HTA35r has the Capability to make 700whp.

 

I just thought if you could rev a 2.3 to 10K, just like a 2.0, peak HP/TQ would be higher.

 

not trying to upset the apple cart here, as we have two well respected tuners here saying the opposite, but is the compressor wheel on the HTA35R larger or smaller?

cheers

John

 

I'm sure Geoff was speculating. I doubt he's actually measured an HTA.

 

I have to say Buschur is in the know since he actually has one and sells them.

 

congrats on the numbers. Do u think thats about it with that turbo or maybe get another 40-50whp out of it?