HELP! Greddy kit and detonation!
#1
HELP! Greddy kit and detonation!
Car and mods:
1990 Miata
Greddy kit no intercooler with stock piping
Jackson racing fuel pump
stock injectors
Vortex AFPR
Enthuza 3" exhaust
Bailey Blow off valve
Jackson Racing plug wires.
Timing retarded to 4 degrees (Hasn't been verified)
Boost 4.5 lbs
PROBLEM:
In higher gears at higher RPMS I can hear distinct detonation (sounds like marbles rattling around inside the engine)
What can I do to fix this?
1990 Miata
Greddy kit no intercooler with stock piping
Jackson racing fuel pump
stock injectors
Vortex AFPR
Enthuza 3" exhaust
Bailey Blow off valve
Jackson Racing plug wires.
Timing retarded to 4 degrees (Hasn't been verified)
Boost 4.5 lbs
PROBLEM:
In higher gears at higher RPMS I can hear distinct detonation (sounds like marbles rattling around inside the engine)
What can I do to fix this?
#2
Boost Czar
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question:
answer:
In higher gears at higher RPMS I can hear distinct detonation (sounds like marbles rattling around inside the engine)
What can I do to fix this?
What can I do to fix this?
Timing retarded to 4 degrees (Hasn't been verified)
#8
- Intercooler - Getting one soon
- Vortex Afpr - How do I find out what ratio and what will that tell me?
- Exhaust - What do you mean by Creep? 2.5" DP I think
- Timing - retarded to 4 degrees is the correct position?
- Boost 4.5lbs - Flying Miata boost gauge tells me so...lol. Is there a more accurate way?
I will try and verify everything I am unsure about after work today.
Sorry for my ignorance, this is my first non-stock turboed car and my first Miata. Since I bought it as is there is a lot to learn. I do try and search the garage section of Miata.net and use the search feature here.
Thanks for all your help guys!
#9
If the Vortec came with the kit, it's a 12:1 disc.
Boost creep is when boost climbs unwanted, and is sometimes caused by free-flowing exhausts.
Retarded to 6 degrees is actually the right position, but it may not be right for you necessarily.
If the gauge is telling you 4.5 it's likely right, could be wrong but if it was it would probably not read 0 when the car's off.
Boost creep is when boost climbs unwanted, and is sometimes caused by free-flowing exhausts.
Retarded to 6 degrees is actually the right position, but it may not be right for you necessarily.
If the gauge is telling you 4.5 it's likely right, could be wrong but if it was it would probably not read 0 when the car's off.