Too much vague information and conflicting posts
I am dividing my turbo setup into 2 stages, so I can get boosted by the end of this summer.
Stage 1: All the hardware to boost.Stage 2: Fuel and Management.
I need answers to the following questions:
Running first at only 4-5psi can I run stock everything? Wouldn’t the ECU just compensate for the extra air flow(without maxing anything out)?
When do the stock injectors max out(hp/psi)? When does the stock MAF max out? Did anyone actually find out?
Lets say I will run an FMU what’s the max fuel pressure I can run threw the stock fuel rails and injectors?
Tired of searching
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Checkered-Member
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2003 Audi A6 2.7T (stock) - Contact:
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WDRacing
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Re: Tired of searching
Checkered-Member wrote:Too much vague information and conflicting posts
I am dividing my turbo setup into 2 stages, so I can get boosted by the end of this summer.
Stage 1: All the hardware to boost.Stage 2: Fuel and Management.
I need answers to the following questions:
Running first at only 4-5psi can I run stock everything? Wouldn’t the ECU just compensate for the extra air flow(without maxing anything out)?
When do the stock injectors max out(hp/psi)? When does the stock MAF max out? Did anyone actually find out?
Lets say I will run an FMU what’s the max fuel pressure I can run threw the stock fuel rails and injectors?
Are you running a FMIC??
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Checkered-Member
- Posts: 1593
- Joined: Wed Sep 24, 2003 7:14 am
- Car: 1998 Nissan Altima (modded)
2003 Audi A6 2.7T (stock) - Contact:
Re: Re: Tired of searching
yesWDRacing wrote:Are you running a FMIC??
Re: Tired of searching
Checkered-Member wrote:Running first at only 4-5psi can I run stock everything? Wouldn’t the ECU just compensate for the extra air flow(without maxing anything out)?
Yes you can
Quote » When do the stock injectors max out(hp/psi)?[/quote]
Theoretically at around 4PSI. But I ran 4-5PSI without issues.
Quote » When does the stock MAF max out? Did anyone actually find out?[/quote]
At about 12PSI with a T3/T4
Quote » Lets say I will run an FMU what’s the max fuel pressure I can run threw the stock fuel rails and injectors? [/quote]
Some people say 90PSI, other 110PSI. I wouldn't go past 90PSI.
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C-Kwik
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I'd be reluctant to run more than 4 psi on stock injectors without a FMU. With an FMU, probably about 7-8 psi max. I'm not sure what the max is for the Altima MAF. As far as max fuel pressure, couldn;t say for sure as I have not seen test data, but these are your limitations. Obviously the burst pressure of the lines. The fuel pump's capicity to even make that much pressure at the flowrate you need. And the injector's ability to open with such high line pressures.