bogging at 4k rich issue seems to be fixed,

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burntricer
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Car: 90 S13 SR20DET Redtop

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i seem to have nailed the rich issue (CTS was the culprit) when i have my mafs unplugged it runs great until it hits 4k rpm, then it boggs out, when it have the mafs plugged in, it wont go past 3k

should i be looking for mafs or boost leak?>


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IanS
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with MAFs unplugged I cant rev past 2500, Id say check the wiring for the MAFs and also clean it and ckeck its voltage. Are you getting any ECU codes, with the MAFs plugged in.

burntricer
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Joined: Tue Jan 02, 2007 6:51 am
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SideWays=smiles wrote:with MAFs unplugged I cant rev past 2500, Id say check the wiring for the MAFs and also clean it and ckeck its voltage. Are you getting any ECU codes, with the MAFs plugged in.
i cant check codes - my potentiometer screw is broken on my ECU. My mafs wiring is 100% correct. My mafs is cleaned, and last time i checked it was giving good voltage.

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IanS
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try and find a known good ECU to test with, that way you can rule it out while checking codes at the same time.

burntricer
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SideWays=smiles wrote:try and find a known good ECU to test with, that way you can rule it out while checking codes at the same time.
awesome plan...in theory. there isnt another sr in thunder bay

im going to get another mafs and im going to also get a new plug and re-wire it. hopefullly that helps

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FSUDrifter
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rich+bog @ 4k = code 34 = knock sensor

for me at least

burntricer
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Car: 90 S13 SR20DET Redtop

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FSUDrifter wrote:rich+bog @ 4k = code 34 = knock sensor

for me at least
knock sensor is good and tight, new aswell

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IanS
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burntricer wrote:
awesome plan...in theory. there isnt another sr in thunder bay

im going to get another mafs and im going to also get a new plug and re-wire it. hopefullly that helps
if this doesnt fix it Ide say its time to invest in a new ECU, one that you can actually pull codes from.


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