Wednesday, April 28, 2010

Subaru Part Review: GrimmSpeed Up Pipe for 02-10 WRX

I got a GrimmSpeed uppipe today and I'm very impressed with the quality. I already have a GrimmSpeed crosspipe and this is right on par with the quality I expect. The welds are perfect, the flanges are thick and straight, and the coating is perfect. It's boderline artwork.
I was so impressed I decided to get some specs on it and post them up.
The inlet port to the upipe (exhaust manifold outlet) has a radius nearly 10mm larger than stock. The pipe tapers smoothly to the outlet (turbo inlet) where its radius is about 4mm larger than stock. The stock uppipe weighs in at about 7 - 7.5lbs and the GrimmSpeed piece is about 3 lbs lighter.

The lowdown:
  • thicker flanges
  • ceramic coating for to keep the heat in
  • mandrel bent pipe vs. stock crush bends
  • ~20mm diameter larger inlet (94.56mm) & ~8mm larger outlet (86.76mm)
  • 3lbs weight savings
An STI uppipe will weigh less than the stock WRX as the catalytic converter, but no one would be buying this piece for the weight savings. I'm actually replacing an STI uppipe I put in because the heat sheild on it has rusted and it's loose and banging around. I think it may also have a leak.

If you're on the fence about this part hopefully this info plus the vendor info pushes you over the edge. It's a solidly built piece and you won't be disappointed.

If you're in Canada, support Touge Tuning. I've had nothing but excellent experiences with them and from what I can tell their prices can't be beat!

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