[pmeyers]

I just recently purchased a single PSI pipe for my 1989 indy 500 off of ebay, however, no jetting specs or info came with it, and i was wondering if anyone had an idea of what the mains change to, if any change at all, from the 290 stock. thanks

 

[xcr440]

I would contact psi for instructions....

 

[Triple650Indy]

Originally posted by xcr440
[br]I would contact psi for instructions....

Agree 100%

http://www.psipowerinc.com/contacUs.htm