I know...another "would this work?"

[Curb]

Ok,

I've decied to sell my EMS and go with an AGP SCT tune. I just don't have any reliable tuners here in the Boise area that I can count on.

That being said, I want to upgrade my fuel before I get a map built. I only want to run about 20-21 psi on my 3147. My question is: could I run that much boost on some 650s and a walbro pump without a return line? I don't go to the track and I probably won't be upgrading to a bigger turbo (I love this one for the street!) If I could get away with no return line for now that would be sweet. I could always add one later. Will 650s and a pump work with that much boost?

Thanks,
Chris

PS: Be looking for my AEM EMS for sale as soon as I can get a pic and post it for sale!

[Gmanigio]

Top end might be lean or it might be perfect.

I know at 23psi I was a bit lean running static 60psi on 650cc.

[Curb]

Yeah, I guess I'm just worried that 750s would be too much fuel.

[Turbocruiser13]

<----- 650s on 50psi fuel pressure running 21psi and pulling 4% from 3500-redline, afrs are 11.5-11.8

[Curb]

Thanks for the imputs guys. I guess that's what I mean when I say I'm torn. Everyone's car is a little different. Some need the 750s and some need 650s. I just want to make the right choice the first time. I know that I won't be running a return line any time soon, but I'll only be boosting 20psi as well.

I think the right answer is 750s with an AGP SCT tune and a walbro pump (no return line for now). That way I have a little more room to play (unless you guys disagree)!

[Turbocruiser13]

If you're definitely going with an SCT then yeah you can get away with the 750s I'd imagine. If you weren't getting the SCT then I'd say definitely get the 650s

[NoisufnoC]

Quote: Originally Posted by Curb

Yeah, I guess I'm just worried that 750s would be too much fuel.

AGP should be able to adjust your tune to work on 750cc's if the 650cc's aren't big enough.

[Curb]

Thanks for the help guys. I also talked to Jon @ AGP, and he said the same thing. I'm glad tha I could get this cleared up. It's a big purchase, and I just wanted to make sure it was done right.

Thanks again!
Chris

[Turbocruiser13]

no problem...good luck with whatever route you choose, and make sure to post your results up!

[Curb]

I'll post up the results as soon as I get them! I'm in Afghanistan (Trashcanistan) for about 2 more weeks before they send me home so it could be a little bit before I can get things ordered and installed. I'll let you guys know though!

Thanks again,
Chris

[sti_zee]

Quote: Originally Posted by Curb

Thanks for the help guys. I also talked to Jon @ AGP, and he said the same thing. I'm glad tha I could get this cleared up. It's a big purchase, and I just wanted to make sure it was done right.

Thanks again!
Chris

he said to go with the 750s?

[Curb]

Yes, he said that I could get a better tune on the SCT flash with the 750s if I wasn't using a return line than if I did 650s with no return line. I trust him, so that's what I'm going to do