Anyone running a fixed pressure regulator on an ITB setup?
Are there any advantages/disadvantages over a MAP regulated regulator.
ITBs and fuel pressure regulators
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0). For tuning/troubleshooting questions, please attached a datalog and your MSQ file to your post.
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
ITBs and fuel pressure regulators
2L Alfa powered Model A Ford roadster.
MSII 2.88ini
EDIS4
GSXR ITBs
MSII 2.88ini
EDIS4
GSXR ITBs
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insanezane
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Re: ITBs and fuel pressure regulators
I don't personally have one on a car but the advantage is supposed to be that when the motor is in vaccum idiling or cruising it reduces the fuel pressue so that the difference between the intake pressure and fuel pressure is the same as anywere throughout the load rpm range wot would be 0 intake pressure and say 40 in the rails and idle would be 10 or 12 inches of vacuum and maybe like 35 psi in the rails still 40 psi difference this is the theory but with itb s the idle vacuuum is usually not real stable so I 'm not sure if it would help you or hurt you maybe it would help on cruising rpm area tuning for easier ve table but i guess it would be a trial and error type deal. Zane
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devastator
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Re: ITBs and fuel pressure regulators
I'm running a RRFPR, but not with ITB's. My fuel pressure is constant until I make boost.
Last edited by devastator on Thu Oct 23, 2008 5:15 am, edited 1 time in total.
Sandrail-ACVW 2276 cc, Turbo
MS-II W/spark burning E85
The sand must be punished.
MS-II W/spark burning E85
The sand must be punished.
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obxer
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Re: ITBs and fuel pressure regulators
I'm running ITB's with the diode SynchroMAP board so I don't have an accumulator. I'm using an Aeromotive regulator. Initially I tried connecting it to the vacuum line from one runner but the pressure bounced so much at idle it caused surging. So I've done all my tuning since without the vacuum connection at 43.5 PSI with no problems. Idles great.
I thought the vacuum connection was optional unless you ran oversized injectors and needed to reduce FP at idle.
I thought the vacuum connection was optional unless you ran oversized injectors and needed to reduce FP at idle.