TCD 325i Turbo Update. Update! 14/15psi now.

[TCD]

The car has been driven ever day for the past 4 weeks by my partner Sweeney. We are running a tiny bit of ignition retard and the car is happy at 12psi non intercooled. We have a couple of things left to tweak but plan to dyno it next week.
Todd

http://www.turbochargingdynamics.com

[slammed_e30]

So what kind of power do you think it is putting out?

[TCD]

We'll dyno it next week. Figure about 240rwhp.
Todd

[Werksmini]

We'll dyno it next week. Figure about 240rwhp.
Todd

That seems really high for a non IC turbo. Maybe im wrong but what are the other turbo guys running for power?
How much do you guys expect for the IC version? Seems like a really cool project, I wish I had the money.

[TCD]

The car dynoed at 147rwhp n/a. Getting 93rwhp out of 12psi seems really conservative to me but we'll find out next week. I could be wrong. I expect 300rwhp witht he intercooler and 15+psi. Figure that a proper intercooler is worth about 30rwhp.
Todd

[M-technik-3]

Todd what day are you going to the dyno? I want to stick mine up on it. Mine is back and living, but undergeared.

[///Mtechnik88]

How imperative is it to have an Intercooler when adding a turbo? I know it creates a denser charge for more effective combustion, but will running a turbo w/o an intercooler create some other undesired side-effects (besides lower HP)

Ian
88 325i Sport

[TCD]

I would not expect any premature failure of parts basis non intercooled vs intercooled on a street car. Street cars spend so little time on boost that the percentage of increased wear is neglible.

A non intercooled car is just limited to the amount fo boost that can safely be produced vs an intercooled car.

Now, a race car or car that sees frequent driver's schools would really benefit from the cooled charge air. Spending large amounts of time on boost with intake temps at 160-200+F will certainly put a beating on engine components.

Todd

[skat 325is]

Todd, can you tell me an estimate of how much retard your running thu out the rpm band ?

Also, is the car running on 93 octane or is it higher ?

My goal is to reach 12 psi

[TCD]

93 Octane. .5 degree of retard per pound of boost. We had 94 octane up until about a month ago.
Todd

[skat 325is]

omg so thats -60 at full boost ?

[808BMW]

omg so thats -60 at full boost ?

Thats 6 degrees of retard at 12psi... doesn't seem rediculous to me...

[TCD]

Sweeney made a boost controller and added a little more fuel and a little more retard and it's running 14/15psi without any detonation. He finally told me that it's pulling hard! All his previous comments were that it is OK. Can't wait to drive it in the morning.
Todd

[SlammedE30]

I wish I worked at a turbo shop. That would be mighty cool. Is this motor stock internally?
-Ted

[TCD]

Is this motor stock internally?

Yep, 100% stock motor with 150k on it.

Todd[/url]