Dingo0079

Just wanting to see if anyone has a 4.6 99-04 GT with 400 or over rwhp on stock internals and if you have had any problems.

04MustangGT

Wish I was [X(]

IWinULose

No, no problems. But, I'm getting ready to do the bottom end, for the simple reason I wanna push more boost. I am currently at 419rwhp. I want 500rwhp, then I'm done spending money. Atleast I say that now.

Dingo0079

what supercharger are you running

IWinULose

Procharger, full bolt ons, and stage 2 vt cams. Debating over going with a new shortblock soon.... and heads.

Dingo0079

how long have you been running this setup? Just nervous about the kenne bell on stock motor.

IWinULose

Since the middle of last year. But, I don't drive the car every day. Maybe once a week if that. And I haven't driven it since the beginning of October. The 2.1 will be fine on your stock motor. It's all about the tune. The tune is what will make or break you. So make sure you are very confident in the guy with the computer and dyno. =]

Dingo0079

I will use kenne bells supplied tune, with their cool airkit 90mm maf and 75mm TB they saud with mild tune at 9 psi intercooled should be at 400 either side of it anyway. Thanks for your help or reassurance

IWinULose

Ah, intercooled. Sweet. Yeah you will definitley be fine. Although I would trust their canned tune, if you come across the extra cash or what have you, I would want to get a real live dyno tune. No 2 cars are exactly the same, close maybe, but not the same. And although your car might run the next 10 years with that setup and the canned tune, I like to play things safe, because I don't like unexpected expenses or downtime. It's all up to you, of course. I think I would just feel better if I had a tune where my vitals were actually being recorded, rather than one where a company 500 miles away *thinks* my car will do this and that.

2000GT4.6

If your looking to blow up your stock motor and have to rebuild it this is a great way to go.

Never ever ever ever ever run the generic tune from any of the supercharger companys. If its not coming from a shop that has lots of experence specfically with 2v mustangs its a terrible idea.

Getting a tune from a reputable shop, even if they send it to you without ever seeing the car is fine, but no matter what you MUST get it on a dyno or wideband A/f meter and get it checked.