Thread: Xcessive plenum - which runners?!

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2010-11-10 13:07:33

#21

jagy

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Originally Posted by blo0d

I'm loving my q45 intake mani 90 mm opening is crazy! But do what I did, 4" intake pipe and installed the maf element into the pipe! Sick setup! Wish my dyno figures reflected it

So no gains at all?

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2010-11-10 15:09:51

#22

blo0d

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Originally Posted by jagy

So no gains at all?

Dynoed with IM with 3" pipe and JWT Pop Charger, gained 10whp over stock IM. No prolonged tuning as car blew radiator hose on dyno

Dynoed with 4" intake pipe and NO Velocity Stack Setup... no peak Gains

. It held power better after 8krpm though! about 5whp held after peak than with 3" intake pipe setup, curve was smoother overall too.

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2010-11-10 15:12:09

#23

Shaggy_master Online/offline status of Shaggy_master is unknown

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Hardly worth it IMO. Craig just give in to the ITBs!
Joe

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2010-11-10 16:15:03

#24

macakin

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Originally Posted by blo0d

Dynoed with 4" intake pipe and NO Velocity Stack Setup... no peak Gains . It held power better after 8krpm though! about 5whp held after peak than with 3" intake pipe setup, curve was smoother overall too.

How about the low&mid range with the 4", did it stay the same? some graphs would be nice!!

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2010-11-10 17:59:16

#25

craiGTi

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i really don't think thats bad tbh, 10whp from the IM at first was good, the 4" intake and q45 was never gonna give much power. throttle response and like you say holding power a bit but i'd honestly be happy if i fitted an IM and got 10whp

I'm not even convinced ITBs would add much more, response yeh but meh

what IM was it? rough specs etc and your engine? 20ve with n1s?

thanks

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2010-11-11 21:20:57

#26

blo0d

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Originally Posted by macakin

How about the low&mid range with the 4", did it stay the same? some graphs would be nice!!

No prob, but im going to need some time... work has me busy!

mid was same iirc

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2010-11-11 21:28:14

#27

blo0d

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Originally Posted by craiGTi

The intake was a custom piece bought here from the forums (alexb13), based on the first half of the stock ve intake runners with velostacks installed (~6" runners + velo plate), will include pics in my dyno post...

my engine is typical n1 cams, bc springs, 4-1 header, 3" exh, cam gears, custom intake mani...

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S13240SX-VVL+T
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---> Z33

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2010-11-11 22:30:54

#28

craiGTi

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cool, look forward to it

also very good 1/4 times, interested in your car as i read n14 gti? mines an n14 gti too - not too many vvl n14 gti's about, you got a build thread anywhere?

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2010-11-12 21:31:34

#29

blo0d

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i found pics! lol i had uploaded em to show miko, well here goes...

Ignore the wires, that was during testing of the maf insert

underneath view of manifold (i dont have jets installed anymore... ALL MOTOR!)

side view and mounting plate for q45 tb

Inside the manifold

before and after intake installation w/3" intake pipe... notice shift in peak power

dyno with 4" intake pipe

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S13240SX-VVL+T
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---> Z33

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2010-11-13 22:54:03

#30

jagy

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Nice results for that manifold. Doesnt look like much work at all. Even upgrading to 4" was worth. Powerband came smoother and you gained back that dip in top end. Good work.

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