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Tuning my car... a couple Qs.

Old 07-04-08, 12:53 PM
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Tuning my car... a couple Qs.

I have an SAFC, an AEM Tru Boost, and an Innovate LM-1. Noted fuel mods are Walbro fuel pump.

I have my Tru Boost set to 65% duty cycle which is roughly 9.9psi in 4th and creeps to like 10.2 in 5th. Perfect boost for the stock turbo/intercooler combo. I hit full boost somewhere around 5k.

My SAFC hi map currently has no correction until 3k. Than at each 1k interval it is +5 (3k) +5 (4k) +10 (5k) +0 (6k) and +0 at (7k).

This causes my AFRs to be a DEAD 11.7-11.9 until about 6k when it than becomes a 10.2.

My question is, what is causing me to run so rich up top? Can I safely turn the fuel down? Do I have upgraded secondaries?
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Old 07-21-08, 11:26 AM
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Originally Posted by FRFC3S View Post
I have an SAFC, an AEM Tru Boost, and an Innovate LM-1. Noted fuel mods are Walbro fuel pump.

I have my Tru Boost set to 65% duty cycle which is roughly 9.9psi in 4th and creeps to like 10.2 in 5th. Perfect boost for the stock turbo/intercooler combo. I hit full boost somewhere around 5k.

My SAFC hi map currently has no correction until 3k. Than at each 1k interval it is +5 (3k) +5 (4k) +10 (5k) +0 (6k) and +0 at (7k).

This causes my AFRs to be a DEAD 11.7-11.9 until about 6k when it than becomes a 10.2.

My question is, what is causing me to run so rich up top? Can I safely turn the fuel down? Do I have upgraded secondaries?
I'm thinking it's more my injectors are stuck/sticking open. I've been flooding recently and getting poor gas mileage. Can anybody confirm these symptoms?
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Old 07-21-08, 11:51 AM
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is that normal?
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injectors are leaking
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Old 07-22-08, 07:33 AM
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Originally Posted by ( ^ ) <-_-> ( ^ ) View Post
injectors are leaking
Is there a way to determine if it is the primary or secondary rail so I can swap the injector from the good rail to the bad rail?
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Old 08-18-08, 01:01 AM
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spray carb cleaner around the secondary rail and see if idle speed increases.
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Old 08-18-08, 04:58 AM
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wouldn't the extra fuel pressure from the walbro make it run richer up top?
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