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aroonkl

Member Since 12 Aug 2017
Offline Last Active Yesterday, 10:25 PM
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Topics I've Started

G25-660, Low torque 1,500-3,500rpm ?

07 October 2020 - 05:12 PM

I have been driving G25-660 ( AMS Omega 12), full built engine and Shep 1K trans for 6 months. The car makes 1146 whp and 963 ft-lb torque. At high rpm, there is plenty of power for my need. But lower rpm like 1,500-3,500rpm when I drive around regularly, it's felt so sluggish.  Before G25-660, I had Bill Spray it Racing Stage 1 turbo  with FBO. It was the fun car to drive as it has good response abroad wide range rpm. When I chose the G25-660, I had expectation for quick boost response while loose some top end HP compared to 1300 package. Currently I feel like turbo lag where it should not be as these G25 turbos are small.

I am confused. What could go wrong? I don't think boost leaks. Tune not optimized at low rpm? Any suggestion?


1100 whp with 21" tires

28 January 2020 - 12:38 PM

    My car is getting built with quick spool turbos aiming 1100 whp. It is daily driven 12-15K miles/year. Car has Michelin PS 4S 275/30/21 front, 325/25/21 rear.

    Lot of members suggest on R888R for 900+whp street use. Do I have alternative option for 21" tires or 20" is mandatory? I kind of love 21" look if I could keep it.  :banghead:

     Tirerack shows

1. Michelin Cup2 325/30/21 dia 28.7", 275/35/21 dia 28.5"

2. Dunlop Sport Maxx Race 2 325/30/21, no matching front in 21"

 

Would Cup2 be reasonable to hold power?


1000-1100whp from FBO Recipe.

18 November 2019 - 07:36 PM

I'm aiming to upgrade from E85 FBO to 1000-1100whp. Kindly need advice on selection of mod to be cost effective. 

 

Goal:

Daily driven and Reliable 1000-1100whp.

Fast boost response. (Closest to stock turbo if it could)

 

Mod list:

Stage 1 Motor build

Camshaft and Valves needed?

What choice of turbos for fast response? 

Intercooler: Street or Race level?

Intercooler pipes?

Upgrade Intake Manifold needed?

Fuel Pump?

Injector sizes?

 

Car already has

FBO E85

Upgrade pump and Injectors (not sure what size though)

Sheptran 2.5  Do I need to upgrade to be Sheptran 1K?