hi guys
i ordered a racing cat so now i would build a custom exhaust system but what diameter would be the best? 2,25 or 2,5 inches? normal steel or high-grade steel? in the moment my K8 enginge is totally stock without the silencer. In future maybe i will build the throttle body and intake manifold from a KLDE on my engine. Any suggestions?
Sorry for my english ;/ but thx for your replys
2,25 or 2,5 inch for my custom exhaust?
Re: 2,25 or 2,5 inch for my custom exhaust?
If your running your stock engine I would say 2.5" is too big.
93 GS, KLZE, KL31 ECU, Centerforce Stg 3 Clutch, 2.25" Exhaust w/Flowmaster muffler, OBX Headers, Pheno Spacers, Front & rear X-drilled/slotted Rotors, KVR pads, SS brake & clutch lines, Ractive Filter, H&R Springs, Tokico Blue Struts, 8mm Accel Wires, MSD 6A w/ Blaster 2 Coil, HVAC Indiglo Panel. *Sold*
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06 Eclipse GT *Sold*
08 Evo X GSR *Current*
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Re: 2,25 or 2,5 inch for my custom exhaust?
2.5" is too large and you'll lose low end torque and probably be unhappy with it. 2" should work fine for your stock engine set up even with a few future mods. If you want larger, wouldn't go bigger than 2.25" inner diameter at most. Get stainless steel TIG welded mandrel bent piping done if you can afford to do it.
Re: 2,25 or 2,5 inch for my custom exhaust?
can i use only 2,5 if a turbo is running in my engine or what mods must i do so that is 2,5 inch is perfect?
- babyblueMX3
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Re: 2,25 or 2,5 inch for my custom exhaust?
i would say a turbo k8 2.25 and a turbo kl 2.5
RIP 400whp ZE-T MX-3
Current car : Golf 01 GTI 1.8T (15 psi)
Current car : Golf 01 GTI 1.8T (15 psi)
Re: 2,25 or 2,5 inch for my custom exhaust?
Anything that develops 215 HP at the flywheel (not the road wheelsOriginally posted by BBK:
...what mods must i do so that is 2,5 inch is perfect?
![Smile :)](./images/smilies/icon_smile.gif)
Re-shaped and re-sized gearshift lever. Best driveability mod you can do!
Extra thick soundproofing in the boot (trunk) to quieten my stainless steel exhaust system![Smile :)](./images/smilies/icon_smile.gif)
Extra thick soundproofing in the boot (trunk) to quieten my stainless steel exhaust system
![Smile :)](./images/smilies/icon_smile.gif)
Re: 2,25 or 2,5 inch for my custom exhaust?
hey thanks guys i have now ordered a 2,25 inch cat i hope it was a good decission