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, MazdaSpeed6 Brakes+SS Lines, Front Strut Tower Bar, Subframe Connecting Rails,, Angel Eye Halo Projector Headlights w. 6000k HID Conversion + Fogs, Smoked OEM Tails, Purple Under/Interior/Engine/Rim/Trunk Glow, 17" XXR 962 Rims, Custom Lip Kit All Around, 15% Tint, Blue Painted Engine, EGR Delete
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