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DISCUSSION => Swaps, Turbos, Buildups => Topic started by: narbar_1234 on July 24, 2008, 02:35:58 PM

Title: Turbo Build
Post by: narbar_1234 on July 24, 2008, 02:35:58 PM

Well as atlanta no longer make supercharger kits my car is now booked in the garage for a turbo, the turbo shall be running at 7psi and will have a uprated ecu and will be fully maped, what sort of power gains shall i expect?

Title: Turbo Build
Post by: vatos_p on July 25, 2008, 02:10:40 AM

my car , in 7 psi , did 200hp ( stock internals - no compression drop )

Title: Turbo Build
Post by: narbar_1234 on July 25, 2008, 06:53:58 AM

thanks for your reply, what psi can our cars go up to with the standard compression?

Title: Turbo Build
Post by: Hodge on July 27, 2008, 09:55:23 PM

Nice to know!

I am also looking to turbo my M42 one of these days....something low pressure (7-9psi).

Title: Turbo Build
Post by: BMABMW on July 28, 2008, 12:45:32 PM

Quote from: narbar_1234;53794

thanks for your reply, what psi can our cars go up to with the standard compression?

I read in another thread it was something like 14 psi with a good tune

Title: Turbo Build
Post by: vatos_p on July 29, 2008, 01:31:21 AM

i think 7 psi with all internals stock and no compression drop is the limit , with very very very good tune you can go to 10 - 11 psi , but thats it...

with compression drop and new forged pistons ( with compression lower ) you can go as much as you can... ( stil stock con rods and crank )

Title: Turbo Build
Post by: rob_e30 on July 29, 2008, 08:25:36 AM

What kind of ECU upgrade are you planning?  Something with integrated knock control is key.  I'm not sure I'd push 14psi with the stock CR.  I would keep it at 10 or below, but it won't really matter if you don't have the proper ECU and tune.