turbo eta ready to go

[someguy2800]

I am getting ready to turn the key on my turbo 325es. I am running a custom turbo manifold adapter, garret t3/t4 turbo with internal wastegate, a 22 x 2.5 x 5.5 inch intercooler, and a 10:1 fmu fuel regulator. I do not want to run a lot of boost only 7 or 8 lbs. I have a couple of questions before I start it up.

How much boost can I safely run on stock internals and 93 gas?

I also have a dinan chip for my ecu. Would it be wise to use this with the turbo setup?

If I were to add a topend off an I motor (thus droping compression) and the 325I ecu, how much boost could I run daily?

If anybody sees any problems with this setup please chime in.

[nefarious79]

You will want to switch back to the stock chip

If you switch to the topend of a 325i your compression will be around 8:1, which is almost ideal for boosted apps. You could run probably close to 20 psi with proper tuning with street driving reccommended at 14psi

The internal wastegate is less than ideal, switch to a tial 40+mm wastegate and you will probably pick up a few more horses

With the eta I would start at 8 pounds of boost and tune from there.

[someguy2800]

Thank you very much that is exactly what I wanted to know

In the future I plan to go up to the i topend, and an external gate.

For now I just want to see how i like it before I really dive in.

Anybody out their got a hp and tq estimate? Say for 8 or 10 lbs boost?