P.S. WHAT ON EARTH do you have done to get those #'s at 9psi??? THEY KICK ASS!!!Screwed2V said:Very good info here, I appreciate it. Did you just replace the mufflers or the whole cat back and by chance do you have a part #? Thanks again.
I just thought maybe you replaced the mufflers as I already have a catback and it's not really worth changing the whole thing again. I went from a magnaflow cat back to flowmaster and love the sound but think I might try the magnapacks this time. Thanks again for the info.Dan_Soprano said:I did the whole catback. You gotta love the way the maggie tips look!!!As far as part #, just go to parshopper on the top of the screen here and click away. It should be easy to find from there.
No problem bro. I say just get the magnapac mufflers and weld them in. No sense in changing the pipes if you already have!! Good luck!Screwed2V said:I just thought maybe you replaced the mufflers as I already have a catback and it's not really worth changing the whole thing again. I went from a magnaflow cat back to flowmaster and love the sound but think I might try the magnapacks this time. Thanks again for the info.
I have a built motor with ported heads and cams. We have the 2 3/8" pulley on there but the little blower just won't make the 14 psi it's designed to. I'd like to make 14 psi but almost 500 rwhp at 9 psi isn't so bad.Dan_Soprano said:P.S. WHAT ON EARTH do you have done to get those #'s at 9psi??? THEY KICK ASS!!!
No $#!T!!!!!Screwed2V said:I'd like to make 14 psi but almost 500 rwhp at 9 psi isn't so bad.
Screwed2V said:I have a built motor with ported heads and cams. We have the 2 3/8" pulley on there but the little blower just won't make the 14 psi it's designed to. I'd like to make 14 psi but almost 500 rwhp at 9 psi isn't so bad.
Dan_Soprano said:I'm really suprised though that just changing from 3 chamber flows to the magnapacs richened it up that much!!
Nope no loss in boost pressure. The 3 chamber flows are the kings of back pressure. Definitly NOT blower friendly mufflers.rhyrlik said:If you gained 23 HP, then there must have been a substantial reduction in backpressure, and a corresponding computer reaction in terms of AF ratio.
I wonder if your boost level dropped at all.
lol, I'm aware, that's why I said what I said above. These are the same heads that were on my car when it made 663 rwhp with a centrifugal. No 2.2 for me.rhyrlik said:Your heads/cams are responsible for the lack of pressure. You'd be better served with the 2.2L when it comes out.
Screwed2V said:lol, I'm aware, that's why I said what I said above. These are the same heads that were on my car when it made 663 rwhp with a centrifugal. No 2.2 for me.
zgarske1038 said:magnapacks are straight through mufflers right? what about the regular magnaflow's im curious because i think that magnapacks with longtubes and an O/R x pipe would be way to loud by the way does anyone know how a magnaflow catback with bbk lt's and a vrs xpipe would sound?
No, the MAF is not pegged. I have the 90mm Lightning MAF that KB uses in the big tube kit. My 1st dyno where I got the crappy #'s, my A/F was a rock solid 11.9:1.neoclasiccl said:Dan your a little rich but the thing that I noticed is your MAF is pegging at the end with the typical go rich and slowly go lean at the end. I guess KB's tune is based on that
Dan_Soprano said:No, the MAF is not pegged. I have the 90mm Lightning MAF that KB uses in the big tube kit. My 1st dyno where I got the crappy #'s, my A/F was a rock solid 11.9:1.
Screwed2V said:So, you only changed from flowmaster mufflers to magnapacks and gained 23 rwhp? I've been considering doing the same thing for a while now but couldn't find any hard evidence that it would be worth the money and time. This may be it.
kkirkyg said:he got rid of 3 chambered mufflers...they will not flow as well as 2 chambered.
kirkyg
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