I am considering running the NOS kit #05123 instead of going turbo. It is a 55-75 shot of wet n2o. Summit says I will need no fuel upgrades, but how safe would this be to use? I have a 91 n/a w/ stock fuel system and 99,xxx miles on the original engine. Any suggestions? And yes, I will get my electrical bug fixed before I even THINK of adding NOS!

 

you need to upgrade your fuel pump

 

Walbro or TII fuel pump?

 

...and would a S-AFC be a good idea as well?

 

'89 vert, 112,000 mile NOS installed week ago, no upgrade and runs like a bat out of H@#%

 

Get back to us when you need a reputable engine reuilder...

At the least I would get an RPM-based RRFPR... but an S-AFC, a bigger fuel pump, and some dyno tuning would be best. Oh, and I wouldn't go with more than a 50-shot, due to the N/As' high compression ratio and small ports - any higher and it's getting near the edge.

Brandon

 

My RX mechanic recommended 60, found '89-91 model years work great at that shot with no upgrades. But hey what every make YOU feel safe