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forcefed3.8's

Buckeye Bullet
Joined
May 26, 2002
Messages
3,845
I am working on a car that has an SMC 2.0 kit on it. The car is running good, 23psi, on the rich side according to the narrowband, no knock.
The car has, Champion iron heads, ported intake, 206 roller, TE60 turbo with garrett housing, Mark Jackson intercooler, stock MAS, TT chip.
I have no experience with alky kits. I am going to put my wideband on it tonight. What AFR should I shoot for? The controller has some adjustments on it. I assume if it knocks, add more alky. I am guessing the other knob is for adjusting how fast it somes in?
Any guidance is appreciated.
 
One knob is the turn on point, I set mine around 11 psi, depends on what octane you are running. You'll have to keep an eye on the spray light and the boost gauge to see when it activates.
If it doesn't knock, you can always delay the turn on point a psi or two. Otherwise turn it down to start at lower boost.
The other is pump speed, I always keep it on full.
 
Cool, It is at 11 for turn on point, and halfway on pump speed. It is on 93 octane. I am going to mess with it tonight. I acts to me like the alky is coming in too soon and flooding the engine out for a split second.
When the car came to me, it would pop at 15psi. Fuel pressure was at 37psi. I turned it up to 43. Now I can get boost out of it. Then it was spiking boost to 27 and coming down to 25 and popping. I pulled the spark plugs figuring they were old. They were fresh, just gapped at .050. I closed the gap to .028 and is runs great. Just wanting to get the alky dialed in and the AFR set safe with a wideband. Thanks for the reply.
 
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