Afpr or not

boost420 · 05-20-2008, 03:31 PM

Modifications: Ct20b, intake, dp, exhaust, cam gears (exhaust 6* retarded), wideband o2 monitor, boost controller, smic intercooler, safc, 1 piece ic pipe, rpm activated switch and afpr. (runs 91 octane 99% of the time)

Question: I am going to out fuel the stock system with this set up and if so can I get justifiable gains by installing the afpr and bumping the base pressure to 50 or do I begin pushing the fuel system to a failure area.

I am torn as my feeling is that with the 91 octane I will never be able to use the increased base becasue my boost is essentially limited to 15-16 psi safetly, and to get the 40cc more out of the injectors I would have to run around with a mix of 91/104.

Sang · 05-20-2008, 03:35 PM

I would get a new rail and a fuel pump before getting an AFPR.

boost420 · 05-20-2008, 04:06 PM

with the 20b am I in danger of running out of fuel on the stock system?

Sang · 05-20-2008, 04:34 PM

Probably not at 15psi. You'll run out of pump around the same time you run out of injector on pump gas.

boost420 · 05-20-2008, 05:35 PM

what about 18 and race gas

Sang · 05-20-2008, 05:54 PM

I personally, would not run the risk. While many others do. It's a $90 pump and a $100 rail. Hardly a bank breaker to have the proper fuel setup.

05-20-2008, 03:31 PM	#1 (permalink)
boost420 Jedi knight in training Join Date: Jan 2008 Location: Chico, CA Posts: 143 Thanks: 2 Thanked 10 Times in 10 Posts iTrader Rating: (1/100% )	Afpr or not Modifications: Ct20b, intake, dp, exhaust, cam gears (exhaust 6* retarded), wideband o2 monitor, boost controller, smic intercooler, safc, 1 piece ic pipe, rpm activated switch and afpr. (runs 91 octane 99% of the time) Question: I am going to out fuel the stock system with this set up and if so can I get justifiable gains by installing the afpr and bumping the base pressure to 50 or do I begin pushing the fuel system to a failure area. I am torn as my feeling is that with the 91 octane I will never be able to use the increased base becasue my boost is essentially limited to 15-16 psi safetly, and to get the 40cc more out of the injectors I would have to run around with a mix of 91/104.

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05-20-2008, 03:35 PM	#2 (permalink)
Sang Go Magic! Join Date: Jul 2006 Location: Home: Tampa, FL School: Gainesville, FL Posts: 3,384 Thanks: 19 Thanked 220 Times in 200 Posts iTrader Rating: (5/100% )	I would get a new rail and a fuel pump before getting an AFPR.

05-20-2008, 04:06 PM	#3 (permalink)
boost420 Jedi knight in training Join Date: Jan 2008 Location: Chico, CA Posts: 143 Thanks: 2 Thanked 10 Times in 10 Posts iTrader Rating: (1/100% )	with the 20b am I in danger of running out of fuel on the stock system?

05-20-2008, 04:34 PM	#4 (permalink)
Sang Go Magic! Join Date: Jul 2006 Location: Home: Tampa, FL School: Gainesville, FL Posts: 3,384 Thanks: 19 Thanked 220 Times in 200 Posts iTrader Rating: (5/100% )	Probably not at 15psi. You'll run out of pump around the same time you run out of injector on pump gas.

05-20-2008, 05:35 PM	#5 (permalink)
boost420 Jedi knight in training Join Date: Jan 2008 Location: Chico, CA Posts: 143 Thanks: 2 Thanked 10 Times in 10 Posts iTrader Rating: (1/100% )	what about 18 and race gas

05-20-2008, 05:54 PM	#6 (permalink)
Sang Go Magic! Join Date: Jul 2006 Location: Home: Tampa, FL School: Gainesville, FL Posts: 3,384 Thanks: 19 Thanked 220 Times in 200 Posts iTrader Rating: (5/100% )	I personally, would not run the risk. While many others do. It's a $90 pump and a $100 rail. Hardly a bank breaker to have the proper fuel setup.