valve springs

[WINDMILL]

Well it comes to it at highter boost it sputters more. at 18 does fine thru the gears. but when you move the boost on up it starts to sputter worse. i have champion irons now. What springs would you use on them the comp 980's or the 981's i'm trying to run 25 to 30 boost and i'm going to change to bigger turbo later too. any suggestions.

 

[WINDMILL]

well took it again to track and still do not want to clear up. so today i took one valave spring off and had it pressure checked still fine(105 lbs). well decided to regauge the plugs and went down to 29 on the gap. and guess what it cleared up. turned the boost up little at a time and got to 26 and no sputtering . so i think i'm, good to go. try and take it thur night testa nd tune to see what happens.

 

[XLR8]

Good deal - plugs are a lot easier to change than springs!