Turbo Guys please Help

[09bbbkgt]

I have a 2009 GT with a 61mm Hellion kit on it. I just had a complete BMR suspension and Strange coilovers installed. What is the best gear i can run in my car that will give me the best 60 ft and MPH combo. Car currently has 4.10s.

 

[rford426]

I would say anything lower than the 410s 373s even or 355s I would think...

 

[1lowtoy]

How much boost are you running? 5 speed or auto?

 

[king_ahmet]

Depends... When do you see boost? I have 3.55 with the 70mm ON3 kit. Not sure of my 60ft times but, it seems to work great. Also, manual or automatic???

 

[one eyed willy]

im running 3:55's with a tr6060....i like it alot!

 

[JoshK]

3:55s in my car. I really want to get to a track to get some times, but the closest one is 3hrs away.

 

[09bbbkgt]

it has seen 15 pounds on the dyno. Car has a LenTech 4R70W in it with a PTC converter. Car pulls 1.6x in the 60 ft but falls on its face on the 1-2 shift. Im using a AMS1000 to ramp my boost in. Car launches on 10 pounds.

 

[JoshK]

Well that would have been really useful info right away!

 

[1lowtoy]

it has seen 15 pounds on the dyno. Car has a LenTech 4R70W in it with a PTC converter. Car pulls 1.6x in the 60 ft but falls on its face on the 1-2 shift. Im using a AMS1000 to ramp my boost in. Car launches on 10 pounds.

What does the converter stall at? Do you have a pic of your dyno run (or the DRF file if it was on a Dynojet)? I assume you are wanting the best gear for a 1/4 mile run and not 1/8 right?

 

[GB10]

3.31s with TH400 and PTC 3600 stall is what I run. Is your boost staying at 10psi with the AMS and do you run CO2? Really, 4.10s are not needed and probably hurting you quite a bit.

 

[PNR Welding]

Datalog your throttle body. I had this issue and my throttle blade kept closing right after the launch. My 60' went from 1.7s to 1.39 with the tune change. It was a torque management issue that was changed. Even though you turn it off in the tune, it still has to be raised.
Check that out with a datalog. You will see the throttle blade angle close while your foot is pressing the gas pedal all the way down.

Nice setup and the best setup with that AMS 1000. I am in the market for a AMS 500 or 1000 and CO2 setup. Only way to bracket race with a turbo car. Then you can put a 4lb spring in the gate and control all the way that turbo can spin.

With your car leaving on 10psi, you should be in the 1.4s 60' if not better.

 

[rford426]

Datalog your throttle body. I had this issue and my throttle blade kept closing right after the launch. My 60' went from 1.7s to 1.39 with the tune change. It was a torque management issue that was changed. Even though you turn it off in the tune, it still has to be raised.
Check that out with a datalog. You will see the throttle blade angle close while your foot is pressing the gas pedal all the way down.

Nice setup and the best setup with that AMS 1000. I am in the market for a AMS 500 or 1000 and CO2 setup. Only way to bracket race with a turbo car. Then you can put a 4lb spring in the gate and control all the way that turbo can spin.

With your car leaving on 10psi, you should be in the 1.4s 60' if not better.

What are you BC are you running allodds?

 

[GB10]

Datalog your throttle body. I had this issue and my throttle blade kept closing right after the launch. My 60' went from 1.7s to 1.39 with the tune change. It was a torque management issue that was changed. Even though you turn it off in the tune, it still has to be raised.
Check that out with a datalog. You will see the throttle blade angle close while your foot is pressing the gas pedal all the way down.

Nice setup and the best setup with that AMS 1000. I am in the market for a AMS 500 or 1000 and CO2 setup. Only way to bracket race with a turbo car. Then you can put a 4lb spring in the gate and control all the way that turbo can spin.

With your car leaving on 10psi, you should be in the 1.4s 60' if not better.

Some very good points. Could also be him bumping the rev limiter before the shift completes in his trans which could also cause the throttle blade to close momentarily, unless that is what you are already talking about, lol.

 

[JeremyH]

For a big boost stalled auto I would go 3.55 or 3.73.

When is the convertor set to lock up?

 

[ModTechRacing]

I'm running a 3:55 gear but I'm running twin 57's

 

[09bbbkgt]

What does the converter stall at? Do you have a pic of your dyno run (or the DRF file if it was on a Dynojet)? I assume you are wanting the best gear for a 1/4 mile run and not 1/8 right?

1/8th mile mostly.

 

[09bbbkgt]

What does the converter stall at? Do you have a pic of your dyno run (or the DRF file if it was on a Dynojet)? I assume you are wanting the best gear for a 1/4 mile run and not 1/8 right?

Converter stalls about 3200. Dont have a pic of the dyno run with the auto.

 

[09bbbkgt]

For a big boost stalled auto I would go 3.55 or 3.73.

When is the convertor set to lock up?

Its a manuel lockup. it flashes around 4000

 

[09bbbkgt]

Some very good points. Could also be him bumping the rev limiter before the shift completes in his trans which could also cause the throttle blade to close momentarily, unless that is what you are already talking about, lol.

the first video i have of it you can see it fall on its face and hit the limiter.

 

[09bbbkgt]

Here is a link to the video of one of the passes.

http://www.youtube.com/watch?v=Bcq1xTTnMsY