Originally Posted by 240M3SRT
Agreed. I might be willing to pay a little more for long tubes when the time comes. I dont even mind modding my exhaust or building a completely new exhaust. Thing is, once we do the basic performance upgrades (cai, pulley and chip) it seems like the next logical step. Breathe in and breath out.
Now when you say 2.5" ID i assume you are refering to the collector right?
If you're going to pursue this seriously and want the max performance out of this engine without a total re-manufacture... Perform all of your mechanical mods before your electronic ones (ECU tuning). I'm sure you understand what I'm saying... Tear the engine down and have it ported & polished by Extrude Hone, have them bore the exhaust ports + 6mm, and intake ports + 3mm. And have them polish the inside of the intake plenums. Disassemble the Supercharger and polish the inside casing to a mirror finish... install the Schrick Cams. Send your injectors to RC Engineering to have them flow tested and balanced at the nominal spec I listed with Stan Weiss
http://users.erols.com/srweiss/tableifc.htm. polish your intake Y pipe... Port your TB by + 1.5mm and install a new butterfly valve.
Remove your OEM IC and acid wash the fins to get the MFG crap out of it... Re-plumb your IC plumbing with a cooling system that is seperate from the engine cooling using 3/4" tube. Wrap the bottom of your IC in heat insulation before re-install... purchase "finn tube" to replace all your IC / HE plumbing tubes.... and wrap all other IC / HE plumbing tubes / connections with insulation. Replace the HE with a Bell Heat Exchanger...
Alright... I'm tired of typing I'll finish this later....