After thinking about where I could gain some more umph in my car I thought about my exhaust. When I got the car years ago, it already had edelbrock headers (TES) and since I have dual cats, I took a look under there to look at the dual cat y pipe. both pipes going to the cats look like they are 2.25"! I know that dual 2.25" flow a hair better than a single 3" but would I see any gain at all going from the dual cat piping that is 2.25 all the way to the cats to right after the cats for about a good foot or so?
I plan on using the Edelbrock y pipe for single cats ( 2.5 inlet and 3" outlet)and getting ahold of a universal magnaflow cat(3" in/out) and attatch a 3" pipe in place of the piece of intermediate pipe that the exhaust shop didnt replace with 3" (like they should have!). Or would this all just be a waste of $?

 

anybody?

 

Yes the Y is a restriction

And so are your shorties
That stroker breathes quite a bit

 

Lt would be nice...ive considered going hedman LT's but i still need a cat (or the shell at least) I will have to do custom catback.

 

gutt cat guttcatt

 

cats are gutted cats are gutted

 

well its not stuffed up then.

 

i was talking about the y pipe choking the motor, not the cats


I took a look under there to look at the dual cat y pipe. both pipes going to the cats look like they are 2.25"!

 

whats wrong with that? but an after market y 2.5

 

the 2.25 is not aftermarket....with dual cat headers (at least with edelbrock's tes) you have to reuse the stock y pipe.

 

stevo, you missed my question....my question was would a single 2.5 y pipe that turns into a 3" right before the cat with a hi flow 3" cat and 3" catback outflow the dual 2.25 y pipe i have now and would it be worth the time and money to do so...

 

no i wouldnt do all that man cause ur back half is is 2.25 isnt it? its ur choice but id think u would notice a big diff maybe 5-10 hp thats my geuss idn about dual cats i had one i bought a test pipe big 2.50 y pipe and summit headers flow master cat back 2.50 with 40 series muf and 3 inch ss tips

 

wouldnt feel a big diff i ment sorry tired workin on fend b2000 mazda pickup 383 turbo 350 an 390 gears

 

my catback is 3"....y pipe is 2.25

 

well do it then less bpress more hp

 

well if i figure out a way to do dual 2.5" exhaust with hedman LT's with cats then id do that