a little tuning help

[wants a tr]

i just installed my kit last nite. going to the track tonite. at the track i run avgas and can run 20 lbs of boost. so for alky and avgas should i set the turn on point at about 18 ? what about pump speed? if its too high will it slow me down? i dont want to just overspray the alky and waste it. would 18 psi turn on and about 6-7 for pump speed be pretty good? this is using a reds 100 chip. and my sig. with stock turbo/ic/heads. TIA

 

[blackbuick87]

Why would you need alcohol at all with avgas? Are you turning the boost to 25 or what

 

[wants a tr]

avgas is just 100 octance. plus u can never be too safe. better to be overprotected than fixing a head gasket. ne suggestions on the tuning part? i'm only gonna run 22 lbs b/c of the stock turbo

 

[blackbuick87]

If you are going to use alky and avgas you should be able to get away with using a full race chip. The avgas should eliminate the transitional knock associated with high timing chips.

Start out by turning the alcohol on at about 15psi and slowly move it up until you see a blip of KR. Then bring it back down a hair

Keep the pump speed high for better atomization. Use the smallest nozzle that will give 0.0 KR