Yeah, you can definitely make more power above 23-24psi. The stock turbo can't sustain it through the whole powerband, but a 26-28psi spike that tapers to 22-23psi makes great power.

I don't see any torque on these curves, so I'm not sure where the torque monster quip came from. With stock cams, I got 383wtq on a 424x Dynojet at 28psi. On my daily 26psi setup, I still see 360wtq. I know we can't compare the different dynos, but my torque is significantly higher than my peak whp, not the other way around like these graphs.

 

Hiya,

The GT30R was done on 21psi of boost.

In regards to the tuning questions, I think it is widely acknowledged that many tuners across the country have different tuning philosophies regarding their tuning and setup of their vehicles. Some tuners choose to supplement fuel and ignition with low boost, while others will supplement boost for ignition advance and fuel. In our particular case we felt that the maximum potential of the vehicle was achieved, and that increasing the boost pressure was resulting in significant diminishing returns that was compromising the safety of the tune. Further to compound the problem is the wide variation between fuel quality and dynomometer readings. Therefore it is often quite difficult (if not impossible) to compare dyno readings from state to state, especially when the dynos are different and the fuel used is different.

In specific reference to the peak HP and torque numbers, one must keep in mind that the purpose of cams is to shift the power curve to the right. So naturally with the addition of 272 cams one would expect to see higher horsepower numbers relative to torque. That said, we stand behind the torque monster claim as we have not seen any EVO's able to make as broad as a power band as we have made on this particular car on our dyno (or similar mustangdynes in the area).

Cheers,

Gary
Gruppe-S

 

In regards to the varying tune philosophies, I just wanted to add that there's been times where we have taken an already tuned car and made MORE power with LESS boost and better (lower) AFR's than the previous tune. There has also been times where cars were brought in with very high boost levels but which tune was sound, and so we did not feel the need to retune.

Cheers,

Gary
Gruppe-S

 

who said that?

 

a few local evo owners I know.

I'm thinking of going to pruven to do at least 3 runs on their dyno, just to see how much difference there is between, TT's and Pruvens Dyno...

 

Whats the fail-safe on the meth kit?

 

You will hear that from the TT crew. There's no way for one Dynojet to read significantly higher than another without SAE corrections like they do here in Colorado (upwards of 1.25-1.27 correction) or unless it's s 424x vs 448x (different roller combinations). The main thing is that Al only shows uncorrected numbers, which look much higher in the Winter, since SAE corrects numbers DOWNWARD in temps colder than ~75*. TT seems to use STD or uncorrected (can't tell if there is a pattern, since I've seen both posted), but recently I've mostly seen STD. To put that in perspective, if you take my current power numbers, this is what you get:

SAE - 333whp/353wtq
Uncorrected - 341whp/361wtq
STD - 343whp/363wtq

As you can see, in this case, if the shop I went to posted my numbers for me without mentioning the correction factor and chose to use STD, the numbers would be the highest possible. that's why I keep begging people to post the actual RUN FILES instead of posting a dynograph that doesn't show the correction factor or weather conditions. If we see the run files, we can get all that info on our own and do direct comparisons.

 

I never use or show uncorrected numbers on the internet. Its not an accurate representation of what mods will do in other places. SAE or bust.

 

The failsafe kit includes an external pressure monitoring system that detects pressure drops in the feed line of the Methanol right before the spray. Upon a pressure drop boost pressure is immediately bled through an independent boost solenoid. Basically a fully independent system that has the capabilitiy to cut boost.

As far as dynos go, for a relative comparison, the Bozz EVO ran 11.2 and made 410whp on our dyno on C16 race gas.

Cheers,

Gary
Gruppe-S