I saw this at thunderracing.com. I'd never heard of it before, but a buddy of mine said he put it on his TPI and felt a major difference. Is anyone using one? Is it worth the money?

 

Thats interesting. Makes the plenum about 1/2 longer. Wonder what it does to the throttle/tv/cruise cables?

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Rob P
89RSconvtZZ4TPI
Edelbrock Hi-Flow Intake
SLP Dual Cold Air Intake
1 5/8" Headers
Semi-Siamesed Runners
MSD6AL/relocated MAT/ AdjFPR/IROC frnt@rear swaybar/wonderbar/steeringbox/alum drvshaft/ Alston SFC/3:23posi disc rear/MAC LCA/H.Adams Panhard Rod/KYB struts/ shocks/
92Z28convt5spd
71Impala convt 402BB
BETTER DRIVING THRU SUPERIOR HORSEPOWER!

 

well it does more than just extend the plenum if you look into the TB bores thier swirled.it supposed to cause a swirling afect for the incoming air

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1991 banditt2 #130 of 600
Project 350 TPI Banditt II
http://www.street-dawg-racing.cityslide.com
http://photos.yahoo.com/tonysams72
http:/discussion-board.com/GreaterCincinnatiFBodyAssociation

 

It comes with a bracket to re-locate the throttle cable. The only problem i had was with the length of the wires for the IAC on the throttle body. I had to splice new wires in. it may of had something to do with my slp runners being wider than the stock ones. Doug

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'91 Z28 - 50,000 miles. All power options leather. 350 TPI:
K&N; Fastchip; Airfoil; Custom 'Ram-Air'; SLP Headers; Slp Runners; Borla Catback 50% open; Dual factory Cats; Poweraid TB spacer; March underdrive pulleys; Accel Extreme 9000 wires, Accel coil; Hypertech rotor & cap; NGK platinum plugs; manual fan switch; TB coolant bypass; Pirelli P7000 Z245/50/R16 all season tires; Energy suspention motor mounts; smog pump delete.
S Cobra Radar Detector; Z28 SS Floormats

 

What kind of gains did you see?
SOTP feel?

 

I did that mod and underdrive pulleys simotaneously, so its hard to tell the exact gain from the spacer. Doug

 

Ok, I understand how a spacer can improve airflow in a wet system(carb or TBI) and swirling the mixture may help to keep the fuel suspended, but I don't understand how this device would help a TPI system. Maybe someone can enlighten me but, I thought the object of TPI was to get air from the TB(and onwards) with as little disturbance as possible. This device(and I use the term loosely) seems to defeat that purpose.

This is not meant as a flame, but in my mind something doesn't add up. As for the claims of a 'real noticeable difference', well let's just say I've heard that about a lot of products that didn't deliver the goods(at least for my cars).

Colour me skeptical. I've said it before: if it does what they say it does, then at least show me a dyno graph.

[This message has been edited by 88IROCs (edited April 01, 2001).]

 

I wonder if it shapes the air, similar to an airfoil?

Other than that, only thing I can see it doing is adding more plenum volume.

 

i'm with 88irocs.the(possible)gains you would see don't justify the cost.i'm guessing it probaly costs around $70 to $80.

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1991 banditt2 #130 of 600
Project 350 TPI Banditt II
http://www.street-dawg-racing.cityslide.com
http://photos.yahoo.com/tonysams72
http:/discussion-board.com/GreaterCincinnatiFBodyAssociation

 

Just buy a NOS 5151 kit and and bolt it on.. the plate extends the plenum exactly like that thing... but unlike that plate it shoots fuel/n20 into your intake and will actually make your car faster. I wouldn't waste your money. Get a set cheap headers instead.

I think easy bolt on things like that and airfilters/airfoils/pulleys sell so well because you think wow.. for 15 minutes of work/less than $100 i can get 10 hp! But you rarely get the results you want. I have a K&N cone filter, and an airfoil on my car... but neither made a big difference. Porting the intake actually did though.

hmm.. now I just need to get a set of headers/y-pipe..


89GTA5spd