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Guest Message by DevFuse
 

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Interesting findings this morning...


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10 replies to this topic

#1 WJM

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Posted 09 November 2004 - 10:35 AM

So...I finally got off my rump roast and put in the catless DP to complement the catless second cat on the Grassroots RX.

Here are the specs...ITS COMPLETELY STOCK! No MBC, no fancy intake as its all factory, the suspension is factory, and blah blah....the only mods are the DSM Gen1 BOV i have set up for recirc, a "cherry bomb" and the two gutted cats. The whol exhaust is 2 inches back to the cats, and it looks like 2 1/4 cat back...but the 'bomb' is more like a pea shooter...2 inches at most.

Road test...the turbo is at FULL BOOST at 2200!! Amazing...I wonder why...Before hand, with an open intake (cone on t3h MAF) it wouldnt get to full boost until 2500 or later. And for some reason...throttle response is the same if not better than other intake setups....me thinks SUBARU has the stock intake systems designed very well...as stock WRX/STi intakes are plenty good for power levels up to 400~450 hp...and there is not too much difference between the two designs...

I thought I'd share... :burnout:

#2 oddcomp

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Posted 09 November 2004 - 10:55 AM

bigger pipes more gets out of the motoor faster
faster exhaust travel means faster spool

#3 WJM

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Posted 09 November 2004 - 10:56 AM

bigger pipes more gets out of the motoor faster
faster exhaust travel means faster spool


Its got stock sized piping.
And...DUH! :drunk:

#4 grantsxt

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Posted 09 November 2004 - 02:10 PM

I wish my XT had a tubro :(

#5 oddcomp

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Posted 09 November 2004 - 03:39 PM

well excuse me i can't be perfect all the time :)
i posted after work this morning and. well you know my other posting condition i think lol besides being tired hehe

i prolly miss read it
oh well
someone might find it useful

#6 JWX

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Posted 09 November 2004 - 04:09 PM

you still running the plastic peices in the air box?

#7 WJM

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Posted 09 November 2004 - 04:25 PM

you still running the plastic peices in the air box?


Yes. The original as it comes factory setup.

#8 maximumBRAT

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Posted 09 November 2004 - 08:15 PM

cool! good luck , thnks for sharing!

#9 baccaruda

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Posted 09 November 2004 - 08:49 PM

are you goingto chop the airbox next?

orrrr..maybe get some 1/4mile or 0-60mph times WITH the airbox/snorkus intact, and then repeat with that sucker gone. we've never gotten some hard numbers on the effect of de-snorkus-izing the airbox, only seat of the pants estimates. granted, i've contributed some of those, and i stand by my estimates, but numbers would be nice...

#10 Caboobaroo

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Posted 09 November 2004 - 08:51 PM

yeah I'd like to know as well. I plan on moddin my RX but just want to know some figures of kinda a stock setup does:)

#11 WJM

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Posted 09 November 2004 - 08:56 PM

are you goingto chop the airbox next?

orrrr..maybe get some 1/4mile or 0-60mph times WITH the airbox/snorkus intact, and then repeat with that sucker gone. we've never gotten some hard numbers on the effect of de-snorkus-izing the airbox, only seat of the pants estimates. granted, i've contributed some of those, and i stand by my estimates, but numbers would be nice...


I know that "to the bridge" (which is about a 0.2 mile run) there is NO difference in top speed between the stock stuff, cone filter, or chop box...only noise differences.

This RX is going to stay as stock as possible....maybe an oil cooler addition...and its got a recirc setup that stays.

The only mods that increase the "TTB" speed is...boost w/full intake, IC, full exhaust and so on...

Dyno results from the chop box, cherry bomb and 12 PSI only show 118 hp...thats THREE (3) HP increase over stock. :-\




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