Twodoor

iTrader: (2)

Hey guys,

I have my plugs currently gapped to .025, and I think I am getting some spark blowout at 11.5 psi of boost. If this sounds plausible, I can gap them down a bit more, should I go to .022?

Keith

bcrx7

iTrader: (5)

Are you running a megasquirt?

18psi

iTrader: (76)

yes, he is.

and I don't think gap is your problem. .025 is super duper close, that's what people with batch spark run.
those cops and that gap should be good for at least 20-25psi if everything else is proper

bcrx7

iTrader: (5)

Alright then, that's what I figured. Search for a thread with FAB9 COP's, it's a few pages (I'm not going to spoon feed this one!) I believe FAB9 came up with a different igniter setup to make these not blowout with the MegaSquirt. Or you can just go ahead and contact them!

Twodoor

iTrader: (2)

I know about the new igniter, I thought it was just for cars with AIDS though... didn't realize the problem also effected MS3 cars.

Thanks for the heads up!

Keith

bcrx7

iTrader: (5)

Thought it effects anything that is non sequential. I'd check with them though. Their could should not have problems with that gap and 12 psi!

Twodoor

iTrader: (2)

They do fine on the stock ECU with wasted spark setup, and some AIDS didn't cause the problem while others did.

I swapped back to the stock coils and the spark blow out is 100% gone. I will be giving Fab9 a call in the AM to arrange for replacing my igniter with the new style igniter.

Thanks for all the help guys, this issue was driving me nuts!

Keith

bcrx7

iTrader: (5)

That's good! I remember having to deal with spark blow out years ago with the Toyota COP's and drove me nuts. It was heat and humidity related too. Such a pain in the butt! It was at 24PSI though, so 12psi just blows!

Hopefully you get it figured out!

sv650_ck

iTrader: (10)

I'm having the same issue running these COPs on an Adaptronic e420c. After installing your old RX-8 injectors and upping the boost to 12psi getting lots of spark blow out. Works fine on stock coils though. Need new clutch too.

bcrx7

iTrader: (5)

See this: https://www.miataturbo.net/fab9-tuni...out-ms3-80734/