Ok so I'm running a b20v
Gsr head with 00' usdm itr cams
High comp b20b. Compression with head bumped to 10:2:1
Skunk2 IM & 66mm TB, aem intake
96 spec itr header and cat, rsr cat back, going to buy better header and test pipe with a 2.5" exhaust for next tune.
Stock fuel rail and fpr. 255 walbro pump

I tuned my car and got 208 whp and 168tq
My tuner told me to get an adjustable fpr, but the question is..
Can I use the stock fuel rail for the adjustable fpr? How much pressure can the stock rail do or handle?
My tuner cut me off at 7k because after that my engine would get leaner.

 

No one knows?

 

I believe you need an aftermarket fuel rail to use an adjustable FPR, but don't quote me on that.

By the way, if fueling is the issue, an FPR is a horrible bandaid to be honest.

If you're maxing out your injectors, you need to get bigger ones and get it retuned.

 

My tuner said I could get more from an after market fpr on stock injectors.
And what about the rail? If I do upgrade injectors can I keep the stock rail?

 

Don't do that. You're just going to kill your injectors if you over pressurize them.

And yes, you can keep the stock rail with aftermarket injectors as long as you get a set that are a drop in replacment.

 

So 310s would be what I need?

 

you can run an adj. FPR on a stock rail.
TBH, i don't think you even need injectors at this point. you're running a fairly mild na setup
get the FPR in there. bump it up to 50psi. that should fair you well

what are you tuning with?

 

I'm tuned on chrome, so what's the highest I can adjust the fpr on stock injectors if I ever needed to.

 

unfortunately, i can not give you a solid answer on that. i do know that 50 is safe. but that's about all i can say

 

Alright. Do you think I'll get gains from a test pipe,header,cam gears, and fpr?

Ohh! And what's a good but cheap (not really cheap) header? For my set up

 

Test pipe+header yes cam gears w/stock ITR's(usdm) no not worth it.
here's a good header (hytech rep) http://www.privatelabelmfg.com/produ...b20-header.htm

 

Can some one confirm this ??

What about the adjustable fpr on stock injectors?
And for that header, do you have it?

 

Cam gears are NEVER worth it with stock cams

and hytech rep are a good header.