I am about to supercharge my y8 with a jrsc,

One of my friend's says I can run it untune for a bit, what are the cons about that..

It's a 9 lb kit.

My motor has 90,xxx original miles.

And for you guys that say I need to tune.

Can you list tuning options?

 

just tune it. save your self the trouble of possibly blowing it up. take it to a professional tuner and have it tuned on crome if your on a budget.

 

definitely cannot run it untuned. i tried a jrsc on a y7 8psi 91 octane would still detonate all over the place in boost. added an fmu bumped pressure up to i think max 70psi and i could get maybe 5psi out of it, anything more it would detonate. do it right the first time, get it tuned. iirc i needed about double the fuel going from 0psi to 10psi on my maps, so you can see how lean it will run.

 

Ttt up for more power

 

ttt

 

your question has been answered. what are you bumping it for.

 

blowing up the engine....obviously.

 

Relax.. lol

I just want to see other people's opinion on tuning softwares.. etc.