so u went backwards. time to put the 3" back on.

btw 3" can be quiet just need to get urself a bigger muffler

as above, you've basically spent 3k on making your car quieter and slower?

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MY93 Impreza GX 1.8L, 0hp, 0nm

Righto, you've labelled the 3" as solid and 2.5" as dotted. The solid line gives more power and torque over pretty much the whole rpm band. Also you've labelled both as full turbo back systems. Either you've labelled them wrong and sorted the arguement (almost, seeing as how the 3" was not put back on for another comparison) or you've put not one but two feet in the oral cavity where words come from

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No more GC8, sad face.
[SIGPIC][/SIGPIC]

Haha - living up to your name, jester

I wasn't expecting the new setup to actually bring HP/torque numbers down... worst case scenario, I assumed they'd stay the same.

I assumed wrong.

Nik,
got any links to the Prodrive diff back setup ?

Intra,
at what KW level do the standard Airboxes with silicon intakes start becoming a restriction on power or torque ?

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"You can turn your back on a person, but, never turn your back on a drug. Especially when it's waving a razor-sharp hunting knife in your eye." - Raoul Duke

Intra is proving the point of this thread, that the "2.5 is bettor" is a crock of shit

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MY93 Impreza GX 1.8L, 0hp, 0nm

i'd call 230-240kw being the line you'd draw where big gains could be seen from upgrading to a monster pod.

its all about filter surface area, most pods on wrx's nowadays are either too small and restrictive, or unrestrictive and ineffective as a filter.

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Long live the WRC

*switches sarcasm detector on* Oh, I see now Took it a bit too literally.

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No more GC8, sad face.
[SIGPIC][/SIGPIC]

Raising this from the dead...

Back to 3" all the way through

Stay tuned for new comparison plots, courtesy of Intra

Experimenting is overrated!

I've also included the temp differences on the 2.5" run vs the 3" run tonight.

As you can see, the 2.5 inch run was done during cooler times, there's about a 4 degree increase in the run tonight. So imagine it if it were similar temps tonight...

looks awfully similar to your previous power..

looks like 2.5 is teh failz.