Nope, I didn't.

 

Does the dynapak put a load on the car? I didnt know it had that feature.

Jason

 

I dont think those numbers are too bad. Would you mind sending me your CAL file so i can check it out and see how it compares to mine since we have the same turbo setup and same mods just different manufactures and specs on certain stuff. ALso do you have any log files you have done? What kind of pump gas are you running 91?, 92?, 93? What A/F ratios are you able to run and what kind of timing? I guess it would answer all my questions if we could swap files?

Chris

 

Yup it does. Check it here http://www.dynapackusa.com/product.htm

 

Sent you a PM. I was running 93 Octane.

Jason

 

How come this question was not answered? Who's EVO is running 128MPH on 21PSI and Pump Gas? Although is just a matter of time before more and more EVOs start to hit 500WHP on pump gas, still I would be interested to find out who's EVO hit 128MPH on pump gas and 21 PSI? Was it an AMS tunned EVO? I read that one of their EVOs recently hit 503WHP (with water injection) on pump gas, pretty sick.

 

I think he is an Evo NY guy, his fastest to my Knowledge is a 10.8 @ 128, the 132 MPH has a slower ET.


Bigger injectors to cut down on the Duty Cycle? IDK maybe post you runs so we can see.



Been done, quite often even with the DSM crowd. The 16G pumps 380WHP to 400WHP with an AEM and proper supporting mods. a 50 trim is way more efficient and at 21PSI moves another 250CFM's at a way colder charge, this is not too hard with proper tuning.



Don't mistake PSI for CFM's, PSI takes a back seat to efficiency and CFM. Look at a T-25 I had the misfortune of using for a couple years on my DSM, iti would spike to 21PSI and made almost no power and would fall on its face at 18PSI do to how inefficient it was. the GT35R is a HUGE turbo, 21PSI will make BIG power and support solid pressure even past 8000RPMS, and if you have the head/cams to flow it, 128MPH is possbile, 118 on the 16G and then you effectively double thr turbo size in flow and efficency, not impossible but in the Higher end of the spectrum.

 

I know compressor maps aren't always 100% accurate but take a look at this and tell me if 21psi can support 500hp?

 

No problem here running close to that

 

So your time on your signature is on pump gas? That is quite an acomplishment congrats. Was there any sort of additional injection used?

 

Yes it can, but the compressor maps are always done on flywheel hp, and not to the wheels. A quick way to read the map is you take your desired boost level which is 21psi add one atmospheric pressure to it which is 14.7psi then take the total and divide it by one atmospheric pressure which is 14.7psi. So it is (21+14.7)/14.7 = 2.42. Now you use the 2.4 for the pressure ratio. To figure out hp you take the airflow and multiply it times 10. So if you where looking to find out if this turbo will work at 500 hp you take 50 on the bottom and go up till you get to 2.4 and see where it lands on the map. Which is right close to the middle of the map. Hope this helps, you can also plug in many different psi numbers instead of 21. like say (30=14.7)/14.7=3.04 which by looking at the compressor map this turbo will make 580-600 flywheel hp which is right on par with the guys making around 500 wheel hp at 30psi. If you figure in drivetrain loss from the flywheel to the ground the car will probably be around 409whp at 21psi. With a 22% drivetrain loss.

 

No it was on a racegas mix (26psi) larger non stock turbo

 

Yeah figured as much. Your numbers are still good but it brings me back to this guy saying somebody ran 10.8@128 on 21psi and pump gas.

 

Well they did, don't know what else to tell you/

I have also seen a 11.7 @ 118 On pump gas on a STock Turbo, the turbo can push this, granted he had a big 27PSI spike and let it settle to 21PSI, the 128MPH is certainly Possible on Pump and proper tuning with proper supporting mods, he could have ALSO been lieing to me to sound kewl, IDK.

 

He was lying to you.