I'm fabbing up my own custom 4" CAI for my LS1 in my '91 GTA. I'm going to use semi truck 4" exhaust pipe for the tubing. I need a 90* elbow to go from the TB to the MAF. Then I'm going to run a piece of straight 4" pipe over to the right side where the charcoal canister used to be. It will then go 90* down, I'll cut a hole where the charcoal canister used to be, and then I'm going to mount a huge K&N cone under the car. Should get plent of cold air. What do you guys think? Where can I get a elbow like that??

Thanks!!

-Jeremy

 

https://www.thirdgen.org/techbb2/sho...hreadid=304297

any auto parts store can order 4" elbows

 

You will need a 90 elbow that goes from 4 to 3.5 inchs, the maf sensor is 3.5. I just finished mine last week, ran a 4 to 3.5 elbow, then a 3.5 to 4 inch reducer on the other side of the maf, then some 4 inch tubing, to a 4 inch 45 degree elbow, then some more 4 inch tubing, and finaly to my filter. I bought it all online, can't remember exactly where but if you need to know just pm me and i can find out for you.

Justin

 

Thanks guys, I think I found a 90* 4" to 3.5" elbow!

 

Here is my Elbow! Totally custom... looks stock.. heh its a secret...