I have an evo 8 just put a full exhaust from down pipe all the way out,ppl on here are telling me I need a tune cause when I hit full boost it jerks but I was wondering if it is bad to drive without a tune ?

 

It is fine to drive without it being tuned with just an exhaust but why add parts if you not going to tune? Adding parts does not make the car faster, sometimes it does the exact opposite.

On a side note...I see you are in Florence, have you thought about switching to e85? I filled up there 1.5 years ago

 

I wnt to get it tuned but I have to get the money first and how is e85 u just put it in?

 

no you have to be tuned for e85.

 

No e85 is not just a put in! You need to be tuned for e85. Along with bigger injectors, bigger fuel pump and other things. Do not just put e85 in

 

That would not end good. My suggestion when you buy injectors and fuel pump is go big initially. Buy a double pumper fuel pump and get some injectors big enough to grow. Don't be like me and stage your fuel system everytime you decide to make more power. Waste of time and money.

 

Do you have a boost gauge and/or AFR gauge installed?

 

if you can't afford a tune you can't afford an evo..