Worth it, to go F.I.???

Originally Posted by delusional

im pretty sure it'll cost way over $6-7k for F.I. some guys over here went to get a quote on the price and it came out to around $13k for everything. personally, i think its very expensive for a "mod" where you can't fully use its full potential on the streets but that's just me. and it kills the reliability of the car. the shop said that under 500whp, you'll need an engine rebuild at around 60k miles which would be another ~$7k according to them.

Originally Posted by mikeSS

i didn't read this whole thread, but i am just going to say what i think from first post. if you have a second car to drive, and want to spend a lot of money then do it. but i must say the engine is not going to last long. with high boost. but if you put a lot of money into a car and go balls deep, i am sure it can last longer.
i know a guy with a 700WHP 350z. its a 2004, and he still has the car to this day. only has about 35k miles on it. spent 80k total on the car. the car is completely custom built , even engine. his runs VERY strong under high boost.

honestly i wont go FI , unless you wanna drop a lot of money.

Originally Posted by 98intrigue

Lets not spread any false information... this thread may be worthwhile to people on the fence about going FI.

The VQ37VHR is still relatively a new engine. It has not been pushed to its limits long enough to find its breaking point/weak points. No one knows that 500whp at 50k miles will require a rebuilt engine. That's the risk all of the FI guys are taking because no one knows...

I've only heard of 1 blown engine and that was with a Stillen SC, which means low power. Does that mean our motors are not safe at 450whp? No. The owner installed headers and didn't retune. That's the end user's fault.

Right now, it's all a guessing game.

Originally Posted by mikeSS

just by reading that i wont get turbos. the car is just to new. how is the drivetrain in 370z ? lets not just look at engine.

BTW nothing i said was really false info, its a fact that any kind of FI hurts engine life. well "high" boost FI.

Originally Posted by Red__Zed

While we are talking reliability, I think it is helpful to say a few things related to it.

Reliability is always a tricky subject, and you will hear a ton of conflicting information. My take has always been that you should be prepared to purchase a new engine at any point if you are FI. simply because you don't know.
As far as running time with FI, a lot of it depends on your tune and how you drive, rather than just the power you are laying down. If you are running your Z hard with 4-500 WHP, you will need a rebuild before 50k...most likely, a stock Z run hard would probably need some TLC around that point anyways. Some of it is also just luck and chance.

To that point, I've owned a couple boosted S2000's, and so has one of my friends. We had similar builds set up by inline pro, except I was gutsier and turned up the boost more. He ran ~458 whp, mine was laying 515 to the wheels. His car lasted about 10,000 before his engine was beyond saving. Of course, this dude drove hard for all of those miles....

I put about 20,000 on mine, including a bunch of drag passes, and when we tore down the engine there was nothing worse for the wear...probably because I wasn't running around at 10,000 rpms to get milk.

Originally Posted by Red__Zed

I don't think anyone has really tested the limits of the diff and trans yet, but I feel they won't be that high.

Originally Posted by 98intrigue

Same thing... the car is still too new to know. If the G35/350Z transmission can handle upwards of 800-1000whp, I don't think the 370Z transmission will have any problem. The thing that sucked about the earlier year G35/350Z transmission was the synchros. My old G35 went through to transmissions.