Hi. I have a naturally aspirated v6 KLDE engine in my 6. Its a 94. The only mods I have are a cold air intake and catalytic converter delete. I want to do an exhaust upgrade and later, a 65mm throttle body.
The exhaust I am thinking of doing is a full header back exhaust with SS headers with the same ratios as the obx headers. I plan on keeping my cat-less setup and going full SS mandrel bent exhaust with a magnaflow muffler.
Now the question is, should I make it 2.5 inch? Or keep it the stock 2.25(I believe)? The headers end in 2.5in, and I could have that all the way to the tips. Has anyone had bad experiences with going 2.5 over 2.25? I might do more with the engine later. Like ze cams and ported/polished im and stuff. Will I see losses with 2.5 over stock?
And how much HP+MPG am I looking for with this header back system?
94 KLDE MX6 MXT - K&N CAI, 67mm TB, Full 2.5" Mandrel Bent Exhaust w. all SS Parts, Wrapped Headers, and Test Pipe M2 Lowering Springs, Strut Tower Bar, Angel Eye Halo Projector Headlights w. 6000k HID Conversion + Fogs, Smoked OEM Tails, Purple Under/Interior/Engine/Rim/Trunk Glow, 16" Enkei Rims, Custom Lip Kit All Around, 15% Tint, Blue Painted Engine/Calipers, EGR Delete
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