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Old Jun 2, 2011 | 12:23 PM
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Default mafless+ induction

Decided to clean up my engine bay, and wont to replace to silicon pipe from turbo to maff, and also wont to completly remove the maff, can i get a pipe to do this so i can feed induction filter into my inner wing ?.

And as anyone made one at all, i have loads of 52mm fmic pipes lying about and may attempt to make one.
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Old Jun 2, 2011 | 12:35 PM
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Thats exactly what i want to do my hose leaking badly at turbo will keep posted to see what replies you get
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Old Jun 2, 2011 | 12:52 PM
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Don't you need a simtek (or similar) ecu to go mafless?
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Old Jun 2, 2011 | 04:23 PM
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sounds complicated maybe a better idea to just use an aftermarket silicone hose to do the job and leave maf sensor as is
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Old Jun 2, 2011 | 05:52 PM
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got simtec fitted, and catch can so was going to run one pipe from turbo to inner wing ?, and as got pipes and silicon bits, cheaper option and tidy things up a bit.
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Old Jun 2, 2011 | 06:02 PM
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Where to find a good after market silicon hose mines a wrx sti v4 1998 need to buy over net as im in Botswana, any help will be appreciated.
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Old Jun 2, 2011 | 06:24 PM
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ive done the same. ive made mine out of alloy fmic pipe and joiners, mine is still located in the engine bay but ive made a cold air feed from the side light (side lights located in the morretts now ) you need to re plum the icv back into the intake, the rest can be lost the only down side is heat soak compared to silicone, i will be keeping an eye on this





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Old Jun 2, 2011 | 06:41 PM
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cheers for that , wot size fmic pipe have you used, and how did you connect to turbo ?, as in wot size is the outlet on the turbo.
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Old Jun 2, 2011 | 08:15 PM
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ive used a newage core 700mm long 90mm thick (245mm tall i think), turbo outlet is 56mm but i used a 50mm slither of silicone stretched over the inlet to bulk it up, then used a 60mm t piece off the turbo with a 25mm take off for icv. then alloy pipe with joiners to make the bends, then used 60/76mm (throttle body joiner) for the air filter coupling. planning to use a hks mushroom once mapped. maff in picture is just for mock up.

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Old Jun 2, 2011 | 09:00 PM
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how would reducing it to 52mm work ?, got to have remap any way, but i have loads of that size pipe.
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Old Jun 2, 2011 | 09:23 PM
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couldnt tell you mate, sound a little small tho. i think im risking it a 60mm. all i can say is see if you can get it up to 76mm by the p/s resivior or soon after or bigger if possible

are you having antilag
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Old Jun 2, 2011 | 09:26 PM
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got the lot m8, chatter, lag and launch , just that i have a pace fmic from a early classic fitted, so had to relocate the header tank and power steering, but the oe silicon pipe is in the way and rubbing on the fmic pipe.
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Old Jun 3, 2011 | 12:30 AM
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ive just done this, had some inlet ast pipe lying around. got a silicone reducer to fit to the turbo, awkward bits are getting the reducer to fit on the turbo and you have to put a dent in the bend on the alloy pipe where it goes past the p/s pump, wasnt too bad a job but ive got no pipes underneath ,its alot cleaner with out all that crap underneath the mani. ive also wrapped mine in that reflect a gold tape, whether it does anything or not - god knows but it looks bling
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Old Jun 3, 2011 | 12:38 AM
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Originally Posted by dbay
ive done the same. ive made mine out of alloy fmic pipe and joiners, mine is still located in the engine bay but ive made a cold air feed from the side light (side lights located in the morretts now ) you need to re plum the icv back into the intake, the rest can be lost the only down side is heat soak compared to silicone, i will be keeping an eye on this





sorry to butt in but where did you get that sidelight vent from, looks good
i should learn to read and i`m doing the same funny enough, your looks good btw, well done

Last edited by stedee; Jun 3, 2011 at 12:40 AM.
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Old Jun 3, 2011 | 06:44 AM
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ive made the side light vent myself, it took me 2 days of fiberglass and filler to get to that stage. i was thinking of making a mold of it and start knocking them out
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Old Jun 3, 2011 | 11:12 PM
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wot exactly connects to the intake pipe ?.
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Old Jun 4, 2011 | 06:58 AM
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the cold air intake?

i molded in a 50mm silicone tube to the back and then used silicone joiner and 50mm alloy fmic piping to direct the air to the bay. the side light hole has had a good trimming to to get the pipe behind the wing.

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Old Jun 4, 2011 | 07:46 AM
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do you not get check engine light with out the maf how will the ecu read amount of air when mafless
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Old Jun 4, 2011 | 08:50 AM
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The simtec is able to go maffless, i have no idea how it works those lol
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Old Jun 4, 2011 | 05:22 PM
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assuming you have fmic you need to have a 10mm boss welded to the intake pipe by the throttle body for the new air flow sensor. if you have tmic you can simply drill and tap it to lacate the sensor on the ic. then the 2 wires on the new airflow sensor get fed back to the maff plug so the ecu can read the signal.

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