Some questions about going FI

[xnick101]

Hey guys what's going on, I have a 08 g37 6mt coupe which I plan to boost next year. Lot more boosted guys on here that's why I came here to ask. This is my daily driver so not looking for an crazy amounts of power, just the awesome feeling of boost. So here are my questions, I am looking to make 400-450 whp on the stock block and stock internals. It's going to be the single top mount kit, the same as the one VSR/Vortex Motorsports in Tampa makes. Will I need to upgrade my stock fuel injectors and fuel pump? Will the stock clutch and flywheel hold the power? Will the stock Y Pipe/Mid pipe be okay with a turbo or will there be too much back pressure in the exhaust? All I could think of for now. Thanks!

[Chuck33079]

You'll need new injectors, pump, clutch, flywheel and csc. The exhaust will be a major bottleneck. Not to mention you'll need gauges, a boost controller, an oil cooler, ecutek or uprev and dyno time, plugs and most likely a new radiator. Budget $15k for the full package and an additional couple of bucks in reserve if the motor lets go.

Look into the BP kit. The vsr kit has some really bad decisions the way it's been set up.

[xnick101]

Originally Posted by Chuck33079

You'll need new injectors, pump, clutch, flywheel and csc. The exhaust will be a major bottleneck. Not to mention you'll need gauges, a boost controller, an oil cooler, ecutek or uprev and dyno time, plugs and most likely a new radiator. Budget $15k for the full package and an additional couple of bucks in reserve if the motor lets go.

Look into the BP kit. The vsr kit has some really bad decisions the way it's been set up.

Yeah I figured this much. I already have uprev, ecutek doesn't work on my car since its an 08. Going with DW fuel pump and GTR fuel injectors. Southbend quiet disk flywheel and stage 2 clutch. Exhaust will probably have to be custom made. But why the new radiator, even Fast Intentions says they don't have any coolant issues using the stock one. I don't plan to go to VSR. But I will be providing all the parts, I just want the VSR like top mount single kit. Someone else will be doing the fabrication for the manifold, rest is on me. But in all honesty I think the VSR kit wasn't the issue, its the tuner. There are a couple guys on here pushing 600 WHP with that kit and have no issues but they were all tuned by other people. I have done a bit of research on forced induction on this motor and have seen a couple cars being turboed and tuned. To my understanding the reasons these cars are blowing up is due to people that don't understand the VQ/VVEL setup tuning them. Also they are not watching the compression, you need to keep compression as low as possible because with the 11:1 stock compression ratio plus boost is too much pressure inside the combustion chamber, causing internal parts to come loose or break/bend. Fast intentions recently just did a g37 with 80k miles with their TT kit pushing 650 whp on stock internals. The motor just needs to setup correctly.

[TopgunZ]

What Chuck said is the safest route. Do you need all of those items..no. I was making over 500 and never needed a radiator. The stock clutch holds 400. Oil cooler is dependant upon how and where you drive. Flywheel doesn't have to be upgrades unless your going for high numbers. You don't have to have a boost controller but they are nice.

You need to read on here...a lot.

[jwick]

Chuck knows what he's talking about. I doubt you'll save much if any money paying someone to custom fabricate a kit for you.

[xnick101]

Originally Posted by TopgunZ

What Chuck said is the safest route. Do you need all of those items..no. I was making over 500 and never needed a radiator. The stock clutch holds 400. Oil cooler is dependant upon how and where you drive. Flywheel doesn't have to be upgrades unless your going for high numbers. You don't have to have a boost controller but they are nice.

You need to read on here...a lot.

yeah there are G37 guys running completely stock clutch and flywheel at 450 whp and have been for 20k+ miles. I would do it down the line. I don't think I will running a boost controller anyway, I don't plan to ever go past 450 whp. Oil cooler might be needed considering its a DD and I live in Florida. Gauges are a must because they are cool to look at.

[TopgunZ]

Wait.. Why did you make this post??? Your back here answering all your own original questions.

[xnick101]

Originally Posted by TopgunZ

Wait.. Why did you make this post??? Your back here answering all your own original questions.

Well I wanted to mostly wanted to know if anyone is running the stock Y pipe and mid pipe mostly. I've never seen any one do that yet, and the injectors and fuel pump. Obviously everyone automatically upgrades these things and was wondering if anyone has done it with the stock ones. Trying to see where money can be saved.

[xnick101]

"Going with DW fuel pump and GTR fuel injectors. Southbend quiet disk flywheel and stage 2 clutch" let me rephrase that, I would like to go with these things but I wanted to see if its possible with the OEM parts. Sorry for the confusion

[Chuck33079]

The radiator is because most of us with boosted cars have higher than stock water temps. Gtr injectors are too small.

A top mount is bad turbo placement, but some people have made it work.

[Chuck33079]

Originally Posted by xnick101

"Going with DW fuel pump and GTR fuel injectors. Southbend quiet disk flywheel and stage 2 clutch" let me rephrase that, I would like to go with these things but I wanted to see if its possible with the OEM parts. Sorry for the confusion

The oem parts will not work. The clutch may need to be beefier, and the injectors are too small. Go with 600s at the minimum.

[xnick101]

Originally Posted by Chuck33079

The oem parts will not work. The clutch may need to be beefier, and the injectors are too small. Go with 600s at the minimum.

Okay thanks for the info sir. What about the fuel pump? Is 255 lph enough or go for 340?

[Chuck33079]

Sure, there are a lot of things you may not need at the outset, but it is always cheaper in the long run to replace parts before they fail.

Go bigger on the fuel pump. Get the 340. Headroom in the fuel system is a good thing.

[jwick]

Originally Posted by Chuck33079

Sure, there are a lot of things you may not need at the outset, but it is always cheaper in the long run to replace parts before they fail.

Go bigger on the fuel pump. Get the 340. Headroom in the fuel system is a good thing.

I'd recommend 750cc injectors too

[xnick101]

Originally Posted by Chuck33079

A top mount is bad turbo placement, but some people have made it work.

What do you think is the optimal place for a single turbo setup?