knock sensors

by **PDX SuperSolara** » Wed Mar 09, 2005 3:06 pm

The whole problem with broken knock sensors has been traced down to lack of enough fuel especially to the front fuel rail. The pathetic stock fuel delivery pipe and restrictive fuel filter tube can barely supply enough fuel for the stock car. Once supercharged ANY boost amount, the fuel system is no longer adequite. It is NOT a problem with injectors. It is NOT a problem with too small a fuel pump. The restriction is in the fuel filter and tube to the fuel rails. Even on 4 psi cars, removing the restriction has improved power and throttle response and has cured issues with knock sensors. People are now running 7 psi safely with all other fuel system components stock. (I highly recommend lower compression beyond 6psi).

by **209solara** » Wed Mar 09, 2005 7:59 pm

so your saying with your fuel rail upgrade its sfe to go to 6 lbs with out any other mods? not even boosting the psi in the fuel regulator under the seat?

by **PDX SuperSolara** » Thu Mar 10, 2005 11:07 am

Since it is a no cost upgrade, I would do the FPR modification. I have not done a dyno test with and without the FPR mod and 6 psi so I can't say for sure but I talk with a lot of people who tell me the Fuel system mod has cured all their knock sensor problems. Most have already done the FPR mod.

by **thakidd** » Thu Mar 10, 2005 11:23 am

when i blew my knock sensors i replaced them. i only drove the car home from toyota and left it parked till i got jims upgrade now that i have gotten it i raced my car at the track about 50 times best mod i bought.i havent done the fpr mod i bought a walboro 190 fuel pump, and now i think i might go to 5.5 pulley......

by **I4 to V6 Swap** » Thu Mar 10, 2005 10:08 pm

Hey Milt, if you need the 23 mm wrench for the fuel rail, let me know.

by **ChargedSolara** » Thu Mar 10, 2005 10:26 pm

i'm lucky..i had no problems with my s/c so far..*crossing fingers still*, and i have put 50k+ miles on it, half with 4psi, half with 5.5psi all with minor modifications. no knock sensor issues, and right now i'm running jim's fuel upgrade, but have not tuned my safc yet..the fuel upgrade made a diffrence immediately though, and i feel safer with it on. definitely go for that. and some tuning and 6psi should be ok

knock sensors

Knock sensors

I would

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