Previous Thread
Next Thread
Print Thread
Rate Thread
Playing with Fuel Pressure? #176439
December 05, 2005 04:19 pm UTC
December 05, 2005 04:19 pm UTC
Joined: Nov 2003
Posts: 2,857
Oakville, ON
Nigel Smith Offline OP
Insane Member
Nigel Smith  Offline OP
Insane Member
Joined: Nov 2003
Posts: 2,857
Oakville, ON
I'm curious if adding a 2g FPR to a 1g will inturn lower my injector DC's?
Also wondering if that 2g FPR will cause idling issues?
My intent is to lower the DC's so I can run more boost without any tuning device as of yet. I'm seeing like 90% at only 11psi. I guess the other option as well is to hack the maf a bit, but I'm not sure I like the idea.

Thanks.


Past
1992 Tsi AWD
1992 Tsi 14.30@100 Stock w/ MAF-T
1992 Tsi AWD 13.03@105 1.71 60'
1991 Tsi AWD
Re: Playing with Fuel Pressure? #176440
December 05, 2005 05:02 pm UTC
December 05, 2005 05:02 pm UTC
Joined: Apr 2002
Posts: 15,322
Loc: Loc:
Rob Strelecki Offline

morum foderator
Rob Strelecki  Offline

morum foderator
Senior Member, with Far TOO Much Time on Their Hands
*****
Joined: Apr 2002
Posts: 15,322
Loc: Loc:
You should end up with a rich idle & cruise.
I'm not sure how far off it would be though, but I'm guessing the ECU would still be able to compensate (yielding lower IDCs @ idle, cruise & mild acceleration).

It will not affect your IDCs @ WOT, and I'm sure this is what you're after.
You would have to alter the airflow signal somehow whether it be a hacked MAFS, piggyback or pot mod.

90% IDC @ 11psi doesn't sound right.
Are you certain there are no boost leaks?


1993 Eagle Talon TSi FWD
13.8 @ 106 :::: 14.1 @ 117
Re: Playing with Fuel Pressure? #176441
December 05, 2005 05:14 pm UTC
December 05, 2005 05:14 pm UTC
Joined: Nov 2003
Posts: 2,857
Oakville, ON
Nigel Smith Offline OP
Insane Member
Nigel Smith  Offline OP
Insane Member
Joined: Nov 2003
Posts: 2,857
Oakville, ON
I dont know on the boost leak issue, I'm seeing full boost at a fair rpm considering the piping and exhaust are all stock.
Looks like I should just get a maf-t again. =)


Past
1992 Tsi AWD
1992 Tsi 14.30@100 Stock w/ MAF-T
1992 Tsi AWD 13.03@105 1.71 60'
1991 Tsi AWD
Re: Playing with Fuel Pressure? #176442
December 05, 2005 05:18 pm UTC
December 05, 2005 05:18 pm UTC
Joined: Apr 2002
Posts: 15,322
Loc: Loc:
Rob Strelecki Offline

morum foderator
Rob Strelecki  Offline

morum foderator
Senior Member, with Far TOO Much Time on Their Hands
*****
Joined: Apr 2002
Posts: 15,322
Loc: Loc:
You have the means to test it so go test it you lazy bastad bird

I find the leak has to be pretty big to noticeably affect spoolup.
While a small leak should still affect your IDCs.


1993 Eagle Talon TSi FWD
13.8 @ 106 :::: 14.1 @ 117
Re: Playing with Fuel Pressure? #176443
December 08, 2005 02:30 pm UTC
December 08, 2005 02:30 pm UTC

A
Anonymous
Unregistered
Anonymous
Unregistered
A


The Throttle body Orings could be leaking, their original, could a plugged fuel filter have any affect, its original to.

Re: Playing with Fuel Pressure? #176444
December 08, 2005 03:30 pm UTC
December 08, 2005 03:30 pm UTC
Joined: Nov 2003
Posts: 2,857
Oakville, ON
Nigel Smith Offline OP
Insane Member
Nigel Smith  Offline OP
Insane Member
Joined: Nov 2003
Posts: 2,857
Oakville, ON
I think if the fuel filter was bad I wouldnt have just gotten 600kms to my first full tank of gas. =) I think basically this is just how a stock car is, maybe a couple small boost leaks, I think I'm going to leave it in its current shape, no point in freezing my ass off working on a car that is nowhere near broken.


Past
1992 Tsi AWD
1992 Tsi 14.30@100 Stock w/ MAF-T
1992 Tsi AWD 13.03@105 1.71 60'
1991 Tsi AWD

Powered by UBB.threads™ PHP Forum Software 7.6.1.1