I have an 04 cobra with intake, exhaust, 2.75 pulley, heat exchanger, irs brace, and a tune. I'm being real specific here lol. I'm making 455rwh right now. I'm thinking about porting my blower. Now, this car is my daily driver so i want to keep it as reliable as possible. How much power do you think this will add? and will i have to worry about anything breaking? and who do you recommend to do the job? I hear that stiegemeier is pretty good. I would do the stage IV if i went with them. I've heard from some people that they didn't see much gain at all. What do you guys think?

 

a stagemeier ported eaton is a good one. I would highly recommmend it. U can gain up to 50 rwhp with the stage IV ported blower. There is really no danger in breaking anything, infact, a ported blower works a good more efficiently with higher boost levels, than a stock blower does. Anyone that did no see much gain with the ported blower, either, didnt get their blower ported by a professionally, or they just didnt get it ported correctly.

 

I had a steigemier stage 4 ported supercharger and my car wasnt any faster. I say save up for a twin screw or just add more boost. I had that on my car for 1 month before I changed. What a waste of money.

 

mixed results i guess........... But u gotta run a smaller pulley to get into the efficiency range of a ported supercharger

 

i went for 447 rwhp 460rwtq to 522rwhp 498rwtq. you do the math 75 rwhp gain. that was with an upper 2.93 and 4# lower, fuel mods and a super cooler, ooh and a mafia.

 

I must have got a defective blower than. I was running a 2.76 pulley which is the smallest you can get.

 

some peoples cars just don't respond to certain things as well as others, thats one thing about hand built engines, with the ported stuff ii am running now i am one of the highes powered eaton cars around here. back on just the pulley intake exhaust tune with a 2.76 i was only making 447 while other cars out here on the sam are maing 460-480. just some cars take certain things better. although i have never seen anyone see no gain form a steggie eaton, so that kind of strange. did you have a maf adjuster and fuel mods to go with the port?

 

I have a stage 2 port by steig and wish I had done a IV. Go for it I have a 3.0 upper and 6#lower 486 at wheels in 95 degree weather and a bad clutch. The SC whines like a SOB after porting.

 

http://69.13.120.175/forums/showthread.php?t=426432
theres a sale going on at svtperformance for porting service, i plan on doing the port when i get some cash

 

I agree, Stegmeier does a great job with the blowers. The power is there with the port job, the next part is getting the tune right on it with a good pulley combo. Its possible your tune wasn't dead on and didnt yield you really great numbers.