rev question

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Jan 25, 2002 | 12:33 PM

#26

pd_day

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From: Miss.

Quote:

Originally posted by mazdaspeed7
Have you messed with your timing? Advanced timing requires a higher octane gas to prevent detonation. The fall-off in power could be from minor detonation, and the higher octane gas would prevent that.

I don't know. I didn't put the engine in, I had a shop do it for me. Put it in 20k miles ago.

Maybe they advanced it for me

?
Oh well, I guess it's high octane gas from now on. I also notice the car pull harder. Sign of advance timing?

Jan 25, 2002 | 12:35 PM

#27

MaxRX7

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From: 80* >

I rev fast to 7kRPMs but it gets sluggish/rough at that point.

This is with RBheader and pre-silencer.

Jan 25, 2002 | 12:37 PM

#28

pd_day

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From: Miss.

Quote:

Originally posted by MaxRX7
I rev fast to 7kRPMs but it gets sluggish/rough at that point.

This is with RBheader and pre-silencer.

Do you have a series 4 or 5?

Jan 25, 2002 | 12:59 PM

#29

MaxRX7

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From: 80* >

Quote:

Originally posted by pd_day

Do you have a series 4 or 5?

this is on a IV 86GXL

Jan 25, 2002 | 01:07 PM

#30

pd_day

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From: Miss.

Quote:

Originally posted by MaxRX7

this is on a IV 86GXL

Is this since your got your header?
Have you tried fuel injection clean/change fuel filter and use high octane fuel?

Jan 27, 2002 | 03:34 PM

#31

MaxRX7

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From: 80* >

Quote:

Originally posted by pd_day

Is this since your got your header?
Have you tried fuel injection clean/change fuel filter and use high octane fuel?

you know, that is a VERY good question.

to be honest I don't really remember. This is 1 of 5 cars I drive plus I installed the header months ago.

I know 1 thing for sure, the injectors are stock and never cleaned, and they have a LOT of miles.