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View Full Version : Stock Fuel Rail - A Restriction?



Don Supreme
08-18-2007, 11:36 AM
I am being told that the stock fuel rail is a restriction past 350BHP.

What do you guys think?

pinky
08-18-2007, 01:50 PM
a good friend of mine made 364whp w/ the stock fuel rail (on race gas).. (GTI 1.8t)

he recently changed software and feels confident he could hit 400+whp... he does have an adjustable fpr and 630s

mike-2ptzero
08-18-2007, 01:56 PM
Plenty of guys making 350-400whp with the stock fuel rail.

Don Supreme
08-18-2007, 01:58 PM
I am being told by an 1.8t fueling expert that he wouldn't attempt 500CHP on the stock fuel rail.

mike-2ptzero
08-18-2007, 02:10 PM
Well others have done it. ATP ran a stock fuel rail making 400whp. You might also want to ask Tapp what he was running on his car while making 500+whp. Can talk to Tim of TJM since IIRC he was running a stock rail on his car while making 400+whp. There is also lucas which was running stock rail for a long time even at 400chp. Might want to ask Steve to see if he is still running the stock rail, I didn't see an aftermarket one listed on his mod list.


Do you plan on upgrading the fuel lines? Also if you upgrade the fuel rail you have to also go with an after market FPR.


What type of power are you making now?

Don Supreme
08-18-2007, 09:30 PM
Well the high flow rail I am getting has an optional adapter that allows you to use the oem fpr.

I am not making any power right now and no I don't plan on upgrading the fuel lines.

I will ask the guy that owns Tapps car right now if the fuel rail is upgraded.

Don Supreme
08-19-2007, 09:53 AM
Seems like Ctapp car uses the stock rail. Why did you upgrade your rail Mike?

mike-2ptzero
08-19-2007, 12:02 PM
Seems like Ctapp car uses the stock rail. Why did you upgrade your rail Mike?

Well the first time I upgraded because we were going to be using a set of PE 800cc injectors so a custom rail had to be made to work with those injectors since they are designed for a WRX/STI. Back then there were no injectors larger then 550cc which were not going to be enough for what the car was going to need.

Don Supreme
08-19-2007, 01:02 PM
Makes perfect sense.