adjustble Fuel pressure Regulators....

March 8th, 2007, 03:44 PM	#1
fastford3388 Regular 1989 Mustang GT 14.70@99mph Join Date: Feb 2007 Location: Belvidere/Champaign ,IL Posts: 275	adjustble Fuel pressure Regulators.... I have a question concerning adjustable fuel pressure regulators. I have a slightly modded 89 GT and I was wondering how I could get a little bit of horsepower kinda cheap. I plan to put a new intake manifold on this summer for increased air flow and I was wondering how the fuel pressure regulators would help me get more fuel in for a better mixture. I was also wondering if I should replace my fuel injectors to upgraded ones as well. maybe 21 or 24 psi? would i be able to tune the regulator before i put the manifold on to get more power or is it pointless on a near stock setup? Also, has anyone had experience with the BBK pressure regulators?? Thanks, Mike

March 8th, 2007, 04:31 PM	#2
88BlueGT Regular Join Date: Sep 2006 Location: Hamilton, NJ Posts: 203	1) I ran a BBK AFPR on my 88 GT for about 6 months w/ a liquid filled gauge w/ no problems but I know alot of people do not like them... I forget the reason though. There are a few other companies you can look at also, for ex kirban, aeromotive, etc. 2) Depending on how much work you want to do, you can get a set of GT-40 heads from the junkyard for less than it will cost you for a new manifold. Get them ported and throw them on there. You will see MUCH better power gains from a set of ported GT-40 heads than an aftermarket manifold. You stock E7 heads are the bottle neck of the engine, upgrade them first and get them out of there! 3) You said 21 or 24psi injectors.... I think you are referring to 24 lb/hr injectors. Anyway, you do not need them. The stock 19lb/hr fuel injectors are good for APPROX 300hp... give or take. Until you do your heads and some other minor bolt ons I wouldnt worry about upgrading. 4) Cheap power - Nitrous __________________ http://i25.photobucket.com/albums/c5...8bluegt6wk.jpg 93 GT - Full Exhaust, 3.90's, Front Tubular Suspension, etc. 88 GT "Big Blue" - Body work & primer!

March 8th, 2007, 04:47 PM	#3
foxstang Regular Join Date: Feb 2007 Posts: 92	hey i know this is off topic and i appoligise for that but i just had to ask. This is to you 88bluegt. Do you like the sound of the slp on your car? I was thinking about going with thoes but i have never herd a 5.0 with them. __________________ 89' 306 W/ Edelbrock performer 5.0 heads, BBK SSI intake, F-303 cam, 75mm MAF, 75mm TB, 30lb injectors, 255lph fuel pump, BBK afpr, BBK shorty headers, Off road X-Pipe, Flowbastards, and 3.73 gears.

March 8th, 2007, 06:00 PM	#4
fastford3388 Regular 1989 Mustang GT 14.70@99mph Join Date: Feb 2007 Location: Belvidere/Champaign ,IL Posts: 275	Any idea on which cars I can get those heads off of? I know the 93 cobra has em but I doubt I'm gonna find one of those in the junkyard. Where can I get them ported? How dificult is it to replace those heads? should I get a new cam with the heads? -Mike

March 8th, 2007, 06:47 PM	#5
mikebert Enthusiast Join Date: Oct 2006 Location: Augusta, GA Posts: 906	93 (Cobra) to 97 5.0 Explorers and Mountaineers(?) have GT40s. 97 1/2 and newer Explorers and Moutaineers have GT40P, which are actually an improvement over GT40. GT40Ps may require new headers because of the dramatically altered spark plug angle.

March 9th, 2007, 11:59 PM	#6
Racinjason81 Hardcore Enthusiast Join Date: Feb 2007 Location: New jersey Posts: 1,277	hey foxstang if you never heard them check out the SLP.com they got sound clips. I think the loudmouths sound awesome.they can get pretty loud but who cares __________________ Speed kills drive an import and live forever. 1991 LX 5.0 H/B 1990 T-BIRD SC

March 10th, 2007, 12:25 AM

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Aeromotive FPR. Save your nickels and get one of those.

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March 17th, 2007, 12:34 AM	#8
angermgt Regular Join Date: Nov 2006 Location: new jersey Posts: 141	+1 on the aeromotive fpr have one works great!

View Poll Results: is it worth putiing an adjustable regulator on?
yes	3	60.00%
no	2	40.00%
Voters: 5. You may not vote on this poll

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