More turbo questions

[trbomp5]

After hours of searching, and calling, and asking, and reading... here is what i plan on doing as far as a turbo goes. The plan is to start off with the basics, and then upgrade and up the boost as I add more to support it. O and please dont even suggest to buy a premade system, I can fab up and have connections to all of the stuff im going to need. So im not going to pay 3-4g for someone to put it all together for me and charge me a ton of markup.

Used T25 DSM ($150)
Rebuild Kit ($100)
DSM Turbo outlet/o2 housing ported ($30)
Log Header Kit ($140)
Used Pop Off ($100-150)
Custom stainless downpipe, and exhaust back to the MS axleback I have now ($100)
-no cats either. No inspections in Indiana!
21x9x3 FMIC core only ($100)
-I can make the end caps the way I want them ($0)
10" stick of 2 1/4" Stainless tube for IC ($0)
All the clamps, braided lines and silicone hose I need I can get through my work from Fastenal and McMaster Carr ($0)
Boost Guage ($50)

The plan is to have all this on, and only run about 4-5 psi. What should I get next to reach my goal of about 8-10psi in the future?

 

[Captain KRM P5]

if all you want to run is 8 psi on 93 octane fuel, something like a Bell FPR will provide enough fuel for you to do this : http://www.bellengineering.net/Pages/products_FPR.html

anything above that you'll want to go with some kind of electronic fuel management - Apexi S-AFCs and similar systems don't work either. SPD racing and Perfworks are both working on standalone systems to provide for higher boost applications.

 

[MP3skaterNC]

you'll need the voltage clamp from fm too. so thats another $100

 

[trbomp5]

You know i knew that I needed a FPR and I totally forgot about it. A rising rate one is the best for turbo aps, correct? Ok and as far as a voltage clamp im going to have to claim ignorance here. What is and what does it do? Oya and im going to need a manual boost controller too right?

 

[Bigg Tim]

Get the MPI tuner/module when your ready to up the boost. It's $795 and controls fuel and timing. Great product and support. I think that price is with the extra injectors, so it might be cheaper if you don't want the injectors, when/if interested PM MPNick.

 

[Little Beavis]

The MPI will also include a "voltage clamp".

As for what a voltage clamp does. . .it prevents the ecu from "pulling" fuel trying to get to 14.7 when you're boosting. Basically it "fools" the ECU when you go into boost so that you can dump more fuel in. Without it, the ECU would shoot for 14.7 while in closed loop operation (partial throttle for example) and then boosted engine goes boom.

 

[Captain KRM P5]

im going to need a manual boost controller too right?

if the turbo's boost is controlled by the wastegate screw then no

 

[trbomp5]

In trying to keep this a fairly simple set up as it is a daily driver that sometimes the wife drives, could I put in an ECU out of a MSP? Would that then be set up and mapped for the boost? Im sure there are guys out there that are running piggyback or stand alones that I could pay to swap them for my ECU. Just an idea.

 

[MP3skaterNC]

the msp ecu would actually be really good for a t25 set up.

 

[PaulMP3]

In trying to keep this a fairly simple set up as it is a daily driver that sometimes the wife drives, could I put in an ECU out of a MSP? Would that then be set up and mapped for the boost? Im sure there are guys out there that are running piggyback or stand alones that I could pay to swap them for my ECU. Just an idea.

the MSP ecu would work, might want to pick up a used MSP turbo.. i know it is slightly different then the DSm t25, but i would think the mapping would be close enough if u wanted to stick with the DSM turbo.

 

[GAspeedProtege]

I had always heard the dsm t25 was not a ball bearing turbo, is that the only difference?

 

[Micah]

In trying to keep this a fairly simple set up as it is a daily driver that sometimes the wife drives, could I put in an ECU out of a MSP? Would that then be set up and mapped for the boost? Im sure there are guys out there that are running piggyback or stand alones that I could pay to swap them for my ECU. Just an idea.

Daily driver - hope you have another car - tuning does take a little time.

Here's another recommendation to call MPNick and ask about the MPI Tuner.

 

[Micah]

oh, and don't forget to get the fog light overlays - 18" rims - led washer nozzles - etc...

Just kidding - make it a sleeper. The advantages are unbelievable.

 

[trbomp5]

the t25 in the msp is the standard t25. the dsm is only in the eclipses. as far as i know the dsm is a ball bearing. If it isnt it will be when i rebuild it. The other diffs are the dsm has the 90 already on the out of the cool side, on the hot side, the intake and the out are dsm specific. Which is cool because there is a ton of elbows downpipes etc. for the eclipse and the in on the hotside is a round one on the dsm and its square on the normal one. The round is better in my opinion becase you can port match and smooth it better. the first 2 pics are standard the last 3 are DSM's