changing exhaust size

You do realize that Magnaflow, Gibson, Flowmaster, and TRD themselves ALL produced 2.5" tubing exhaust systems for the 2001-2004 3.4L Tacoma right? I'm sure all those companies, engineers, designers, product testers, and Toyota's own in-house performance division are wrong as well. But I'm sure you knew that too.



My work is done here.

 

If I was you I would leave the pipe 2.25, Toyota got it right by going with that size

The bigger the exhaust pipe, the less low end torque you will have, also your power band is moved up to higher RPM

This is my experience, when I had my 98 Taco I went with 3" then dropped back to 2.5" and finally ended up putting it back to 2.25"

I am currently running 2.25" with MagnaFlow muffler on my 01 Taco and it`s perfect in my opinion

Many others have stated the same thing in many threads on here

Best of luck, whatever you decide

 

Those companies are in the biz of making money. You think they use an engineering crew to find out what size pipe is the best for every make/model/motor out there? They just slap on 2.5'' pipe and go with it.

There are a lot of companies out there, like K&N that produce a "CAI" for out trucks and those are proven to have no gains...and they still sell them...no engineering there.

 

i know you wont do this but just to throw in my exhaust experience...i have no muffler, 2.25 pipe all the way from manifold to the back of my cab, from the back of my cab i have 3" pipe all the way out the back side exit like stock. i have not experience any loss in performance (just going by how my truck feels with my boat going up the biggest bridge in charleston). it has never died off hi revs ( i do rev it some times for effect). What i have noticed is that my city mpg have hit the shitter. my hwy mpgs are exactly the same. soon i will be putting my magnaflow on and replacing seeing how the 3" pipe affects the mpgs...if it does nothing i will be scavaging my old 2.25 and throwing it back up there. Peace

 

the 3" does sound sweet though.

 

I have 3" exhaust from the cat and after the muffler.

 

whats your city/hwy mpg? and what muffler?

 

Riiiiggghht. If that was the case than even Scion XBs, TCs, Corollas, RSXs, Civics, and Celicas would all be running the same 2.5" exhaust because the companies would just "slap" them on as you say, but they don't. I'm sure not one of the companies does zero R&D especially TRD whose SOLE purpose in life is Research and Development for Toyota performance, who chose to run and produce a 2.5" exhaust on their test Tacomas. You are absolutely delusional.

 

mhmm

kay bai

 

Yea..and look how many ppl run those systems..

 

Not to create a huge mess. But i was speaking to Ron from Spintech he kept telling me Stock tube size.

 

2+2=banana

 

NO!...its apples..and oranges! get it right! sheesh..haha

 

And what is stock? I'm running an aftermarket muffler on stock pipes and I'm telling you stock is not either 2.25 or 2.5.

Getting crappy muffler shop crunch/pinch bent pipe in 2.25 will be smaller than stock and flow less.

Somebody get some calipers and measure it.

 

Idk, neither do I care...

I have a Bad Ass muffler my buddy made... That is the name of the muffler, BA.


EDIT: Use to have the exhausted routed like this


It was pretty sick. It would set car alarms off.=D

 

Disturbing the peace, awesome.

 

This would be a great show for Myth Busters. Is 2.5" diameter piping good or bad for tacoma... Fact or Myth???
Quick someone contact Discovery Channal so we can get the ball rolling on this!

 

just need someone to do a dyno right?

 

At least on my 99 taco v6 i measured its 2.25

 

Delusional hell....I love my padded room!!!