Best size exhaust for the Tiida MR18DE

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moz@
Posts: 6
Joined: Thu Apr 09, 2009 4:37 pm
Car: Tiida STL

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Hi everyone,

I wanted to find out what is the best exhaust size piping for the nissan tiida 1.8L (MR18DE)?

The only other mods i will ever do is a pod filter, and i dont want to loose any power at low revs.

I am planning on getting a Cat-back system Mandrel Bent with a Maganflow Hi Flow Cat, and an offset straight through muffler.

So how many people reckon i should get 2" or 2.25"???


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themadscientist
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Joined: Tue Nov 12, 2002 3:30 pm
Car: R32 GTR, DR30 RS Turbo, BRZ, Lunchbox, NSR50 Sportster 883 Iron
Location: Staring down at you with disdain from the spooky mountaintop castle.

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based upon the average pipe on a CA18 muffler I would say 2".

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blindsnyper
Posts: 3016
Joined: Mon Oct 01, 2007 12:33 am
Car: 2007 versa
Location: oregon

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i have 2.25", but honostly i have no clue what would be better. i have also heard of 2.5".

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themadscientist
Posts: 26254
Joined: Tue Nov 12, 2002 3:30 pm
Car: R32 GTR, DR30 RS Turbo, BRZ, Lunchbox, NSR50 Sportster 883 Iron
Location: Staring down at you with disdain from the spooky mountaintop castle.

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If the car loses torque down low it's likely too big. Leaving the cat in might make the bigger pipe after a better size than 2"Most of the SR20DE and CA18DE mufflers use 50mm pipe though.

Red Devil
Posts: 1015
Joined: Tue Dec 05, 2006 8:11 pm
Car: 1990 240SX w/t SR20
2008 Nissan Versa SL

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blind_snyper wrote:i have 2.25", but honostly i have no clue what would be better. i have also heard of 2.5".
Anything over 2 in is too big for an NA 1.8l 4 cyl.

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#1Tango
Posts: 631
Joined: Fri Mar 28, 2008 8:10 am

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the stock exhaust is already 2" mandrel bent. just cut out the resonator and BAM!!! you got a cat-back. just change out the muffler and your set.


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