7-AFE Custom 4-1 Headers, UPDATE WITH DYNO CHARTS!! 56K Warning Options

[94celicadude]

ok well here goes;

My dad and i have been wanting a correct 4-1 header for our 7-afe for a long time, we have finally gotten around to making one. We used the plate that attaches to the engine from a Aerospeed header, so yes that was salvaged for parts. Then we had a shop bend up some pipes, all equal length. To be precise they are 37" long and they are calculated to be the length for the best performance gain at peak power, so then it falls right back into the peak torque and off you go again. So anyways, after about 3 weeks of work here is the result. All the welding except for the tacks in the before pictures was done by me, and the wrapping of the system was done by my father and I. The collector was purchased from Pegasus Motorsports, and the rest of the pieces were purchased or salvaged from our old 4-2-1 headers. Sorry for the number of pictures but i figured people would like to see it in detail from many angles. I am hopefully going to finish installing it on mthe car this weekend, so if i get a hold of a camera with sound ill try to take a sound clip of it with just the headers, cuse i know it sounded badass before it was welded. ENJOY!!!!!








This post has been edited by 94celicadude: Aug 29, 2007 - 7:02 PM

[94celicadude]

thxs for positive comments guys, but dyno really shows the smoothness in the power curve, before tuning we noticed a definite bump in power at about 3700, u can even see it in the graph, and now its just more power, sooner in the powerband, and it stays contantly smooth. Also with the 9lb. lightweight flywheel, its amazing how i just cant get used to having to shift as fast as i need to, it just really goes all the way to fuel cut without a feeling of significant power loss. Once again, thx for + feedback. The engine is getting a rebuild with lots of head flwoing goodies and such hoepfully before too long, trying to get it done before auto-x season start in april. Wish me luck once again.
Matt