Detonation Problem

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09-27-2003, 08:50 PM

#11

98civic

0.0 BAR

Thread Starter

Join Date: Jul 2003

Posts: 13

Re:Detonation Problem

i'm using the 12.1 fmu from Vortech. the website said it was good for 10psi and under on stock injectors. all i have is a boost gauge.

09-27-2003, 08:53 PM

#12

Dr.Boost

3.0 BAR

Join Date: Mar 2003

Posts: 21,479

Re:Detonation Problem

I'm having a hard time believing you are running lean with a 12:1. Very strange.....

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09-27-2003, 08:59 PM

#13

98civic

0.0 BAR

Thread Starter

Join Date: Jul 2003

Posts: 13

Re:Detonation Problem

what could be wrong, when it hits 5K it starts to drop rpm and raise again, then drop, do you understand what i'm saying? i cant of a good way to explain it.

09-28-2003, 12:44 PM

#14

warren_teg

1.5 BAR

Join Date: May 2003

Posts: 1,024

Re:Detonation Problem

could it be your internal coil.

09-28-2003, 03:24 PM

#15

Jared

0.5 BAR

Join Date: Aug 2003

Posts: 80

Re:Detonation Problem

Quote:

Originally Posted by 98civic

I just installed a IHI turbo setup for my 98 civic(D16y7). With the wastegate on my car it runs 4psi, feels like stock for me, so i unpluged the wastegate and the car runs a solid 7psi it never goes beyond that point

So with no vacuum line at all to the wastegate you run 7psi? Sounds like a major boost leak to me, could be the reason you're detonating.