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Old 10-25-2000, 02:59 PM   #1
cakagan
Scooby Newbie
 
Member#: 251
Join Date: Sep 1999
Location: Chicago, IL
Vehicle:
1998 Impreza 2.5 RS
Black

Question

Can someone tell me what detonation sounds/feels like?

Thanks,
-Chris
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Old 10-25-2000, 08:27 PM   #2
Gambit
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Member#: 102
Join Date: Jul 1999
Location: The meeting place
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It feels like there's some tiny firecrackers giong crazy within your engine compartment.

Update : I dumped in 94 octane to the brim and drove off. Took some time to go WOT. detonation seemed to have gone. Power delivery nice. I think this naughty Scooby likes the new octane. But errr... at that premium. No way! Once I'm done with this tank I am going down to 91 or 92.
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Old 10-25-2000, 09:02 PM   #3
Ken Levin
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Member#: 1416
Join Date: May 2000
Chapter/Region: BAIC
Location: SF Bay Area
Vehicle:
2/01 WRX SportWagon
Aspen White

Post

92 is the highest pump gas we get out here. I've always run it. The higher mpg more than makes up for the higher $.

It might even add some zip.
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Old 10-26-2000, 12:30 AM   #4
Gambit
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Member#: 102
Join Date: Jul 1999
Location: The meeting place
Post EJ22 detonation!

Crap! My car's detonating after 5000rpm! I've just reset my ecu too. I am using 89 octane. Never happened before. Must be bad batch of gas? Now what? get to 91...93? <gulp> Engine Mods are K&N filter minus snorkus and 2.25" Borla catback exhaust. as long as I don't WOT to 5000rpm the car's fine. I really don't want to get an AFC right now. Will upping the octane help?
BTW, I still have about 1/2 tank of current gas to go.

[This message has been edited by Gambit (edited October 25, 2000).]
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Old 10-26-2000, 12:39 AM   #5
DLC
out back
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Member#: 1964
Join Date: Jul 2000
Chapter/Region: RMIC
Location: 84XXX
Vehicle:
01 BH
Blue/Bronze

Post

Put the highest octane you can get in and run it dry. fill it up with the highest you can get and run a full tank of that.

switch back to a partial tank of the lower octane and see what happens...
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Old 10-26-2000, 12:48 AM   #6
shiv
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Member#: 607
Join Date: Dec 1999
Location: SF Bay Area, CA
Post

Replace you fuel filter. It may be getting clogged.

Shiv
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Old 10-26-2000, 12:48 AM   #7
ColinL
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Member#: 114
Join Date: Jul 1999
Chapter/Region: MWSOC
Location: Wichita, KS and Whoring, OT
Vehicle:
'03 Evo, Rice White
'01 Erion CBR 929

Post

There is always octane booster.

It could have easily been bad gas, especially if you bought from a small vendor or someplace you usually do not buy from.
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Old 10-26-2000, 12:57 AM   #8
Gambit
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No I always use Sunoco. In fact it's 89.5! Better than 89. I'm sad. I really am not sure what to do now cus I still have 1/2 tank of these vile liquid!!! I might just go what DLC said and fill it with high octanes and go from there. Dand another ecu reset?!

Shiv : I will give the fuel filter the benefit of a doubt for now. <sigh>

This never happened before!
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