I have a 99L it has a Pro-m 80 and magna flow catback . I want to put a 4# lower on it ,do i have to change the mass air ,and do i need a chip if i stay with the pro-m .I just want to make it a little faster .Thanks I know this a has been talked about before but not with a pro-m If it sucks say so I will change it

 

I'd go with the 90MM unit, get the 4#'er, and get a chip to get the full benefit out of all the goodies!

-Mike

 

thanks

 

Go with the 90 and a chip............

PEaCE.................

 

Please more input there are some of you that have be around this stuff a long time and you post all the time please help

 

Oh Schitt, Robs here. I know how you Mo Fo's think

Hi Rod Cobra
Filter-chip-n-pulley is a no-brainer if you want a nice safe 12 sec L.
I would also go for the 90, and make sure you tell the tuner EXACTLY what you want. It sounds like you want a nice safe tune, make sure you tell them that. And put colder spark plugs in it. I like Denso IT-22's. They're 2 ranges colder and for the money they pretty much grrnty you a great idle and no misses. Being they're colder they also rid the cylinders of heat better than stock plugs or TR-6's, which are both hotter plugs.

 

Thanks again What about TR5s remember I'm new at this

 

I for one ran the Pro-M on my 99 and I know of a few 00 that run it also. That being said I would stay with the Pro-M for the simply reason is that you already have it. If you could score the 90MM for a song and dance, go for it. But why throw good money away?

I would just buy the chipnpulley and enjoy my truck!

 

thats what i"m thinking but i have heard they suck ,and i don't want that ,but if not i will live with it .Thanks