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CSK
6th December 2009, 01:58 PM
Hi.

I have sourced a set of new Pacemaker extractors for my 1990 3.9L V8.

Can anyone recommend any particular exhaust sizes or mufflers that would suit the application. I would like a bit more of a V8 sound but nothing obscene that would attract unwanted attention.

Single or twin pipes?

Could I expect any performance gains or better fuel economy?

Would I need to get the engine re-tuned after the new exhaust?


Cheers.

Tombie
7th December 2009, 08:32 AM
Single (better torque)

2 1/2" is ample for a 3.9L and not too obtrusive noise wise.

CSK
7th December 2009, 04:19 PM
Thanks. What size is the standard 1990 3.9L exhaust?

PhilipA
7th December 2009, 07:34 PM
As I said to you a couple of days ago 2.25 inches.
Regards Philip A