Nissan 370Z Forum - 370z Supercharger Boost Issues

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Quote:

Originally Posted by Elmo370z (Post 4021482)

Need a better intercooler, and probably downpipe. Air is getting backed up at wot causing your IAT’s to shoot up. Such a common issue with everyone here.

Your close but not quite right.

Quote:

Originally Posted by pkxu123 (Post 4021438)

Update on post

I took it to another shop for diagnostic

Immediately, within a couple of hours they found the cause of the rattle AND the issue thats causing boost restriction! Amazing!

Soon as they took the bumper off, they can already tell that the intake was the problem. They did a dyno run with the intake on and off. With it on, they only saw around 5psi of boost. After they took it off, they immediately saw 10.

The shop that worked on the car initially custom fabricated the intake so I gave them a call and they were surprised that it was causing that much of a restriction.

And now the rattle…. They chucked it on the hoist and found that the right cat is defective… something is internally loose. Been advised to do a warranty claim.

Will keep this thread updated soon as I get updates…

So are you going to bring it to a new shop or have the old shop fix the intake and get them to retune it again?

If I were you, I would just demand a refund and take it elsewhere. Seems like you've had nothing but trouble and dishonesty through this shop.

Quote:

Originally Posted by 370zMelb (Post 4021494)

I called the shop but the owner wasn’t in the shop. The front desk has told me he will let the owner know and I will receive a phone call from him. Been 2 days and I haven’t received anything yet…

At this point, I’m probably leaning towards a refund so I can get someone else to sort it out if they’re not willing to.

Get the 4" S&B velocity stack/turboguard and add 2 Filterwears 6" filters. Problem solved.

Quote:

Originally Posted by TopgunZ (Post 4021501)

Get the 4" S&B velocity stack/turboguard and add 2 Filterwears 6" filters. Problem solved.

Will this severely reduce the life of the motor/blower?

Quote:

Originally Posted by pkxu123 (Post 4021591)

Will this severely reduce the life of the motor/blower?

Quote:

Originally Posted by redondoaveb (Post 4021602)

What are the downsides to running the turboguard with the filterwear compared to running the intake system?

From what I’ve gathered, people usually don’t recommend running a turboguard on a daily driver

Quote:

Originally Posted by pkxu123 (Post 4021621)

It entirely depends and is completely subjective as everyone is going to have their own opinions on this. On a daily I would say yeah you probably should be running a filter. Theoretically running without a filter certain particles ingested into the engine can begin to wear the piston rings/cylinder walls.

Personally I don't run a filter (anymore) but my Z isn't my only vehicle and I don't daily it. On top of that making double the power than stock I don't exactly expect my engine to last 100k+ miles where it'd matter anyways.

I'm really surprised whatever intake they made for you was so restrictive that you only managed to get 5psi out of it. I'd be curious if you had some pictures of it. I had a shop at one time try to make me an intake and they did an awful job with a very obviously restrictive "box" that the airflow had to take several 90 degree turns, and even with that I was around 9psi.

Quote:

Originally Posted by pkxu123 (Post 4021621)

The filterwears is a really fine cloth mesh screen that goes over the turboguard. They work really well to even keep most dust particles out. The downside is that they're restrictive but it can be removed in a second. Great to run as a daily and if you're in a situation where you want a few more psi, it only takes a second to remove it. It's held on with elastic and stretches over the turboguard