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J Boot/AFM Delete for VEMS

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Old 12-22-2016, 06:10 PM
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NCLA951
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Default J Boot/AFM Delete for VEMS

Is there any off the shelf pre turbo intake tube (like a MAF with no MAF) that people are using to go VEMS/MAP? 3" preferably for K27.

Going VEMS next month and want to see if something's out there before having something fabbed. Needs to put cone filter behind headlamp and have AOS, BOV and Evap ports.

Also going to hollow out AFM for those special state mandated times, but for regular use want to take advantage and have as little restriction as possible pre turbo.

Thanks!
Old 12-22-2016, 06:37 PM
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V2Rocket
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Why not just use the stock airbox and stuff, but make a simple tube to connect to the J boot? With the AFM out of the picture there isn't really any restriction aside from the loop-di-loop air path.

Lindsey makes a 3" J boot too.
http://www.lindseyracing.com/LR/Pors...A-951-JB3.html

One less thing to f*** around with when smog time comes, and just looks a lot cleaner, IMO.
Old 12-22-2016, 09:09 PM
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shortyboy
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http://www.bellengineering.net/produ...roducts_id=674
You can order pipe in different sizes. From what Ive seen, bung on pipe is fir IAT sensor. K27 inlet is 2.75".

PS. Could you please document your installation and impressions of the VEMS system on your 951? I know Spencer has done his already for the 944, would like to hear how it goes on the 951 as well. Almost got enough for my kit. Happy Holidays
Old 12-22-2016, 09:21 PM
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NCLA951
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Spencer that's a good idea, I have the 3" j Boot already in use, but want to see just how unrestricted I can get the pre turbo section, even if I end up back with stock box and tube.
Old 12-22-2016, 09:44 PM
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NCLA951
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Shortyboy the IAT for the VEMS wants to go on the intercooler to TB pipe, so I'll have a welder friend weld a bung in for that.

I'll probably have him fab an intake pipe as well just didn't know if there was something easier.

I will def do a thread on the install and tune, I think a few of us are getting together to have Raceboy fly over and final tune our cars himself some time in the new year.

Cheers!
Old 12-22-2016, 10:20 PM
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86ninefive1
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I too would be interested in a thread on your build since VEMS is in my plans for the near future.
Old 12-22-2016, 10:47 PM
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V2Rocket
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Would love to meet Peep in person if that were to happen.
Old 12-23-2016, 12:31 AM
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NCLA951
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Spencer ill keep you posted! Been thinking about it should be easy to fab 3" AL intake pipe with proper bend cut and welded. Will post when prototyped.
Old 12-23-2016, 01:11 AM
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Jay Wellwood
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Just curious as to why AL is the choice over SS?
Old 12-23-2016, 10:38 AM
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V2Rocket
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cheaper, lighter...its just a pipe.
if it were me id probably make one out of mild steel..lol
Old 12-23-2016, 10:45 AM
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Raceboy
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I will probably make few AFM "plugs" after holidays, simple pipe that is pressed into sqaure in one end and flanges welded to it.
Old 12-23-2016, 01:19 PM
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Smudo
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My 951 has some random metal pipe in place of AFM, that was laying around in the workshop.



Last edited by Smudo; 12-24-2016 at 01:39 AM.
Old 12-24-2016, 10:58 AM
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Northern_aqs
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I have installed the VEMS on my 87 951 and am happy to answer questions.

My car car is low mileage and I wanted to be able to install a system with minimal permanent modifications. The IAT sensor was installed in the charge pipe but that's a simple part to replace. I've removed the AFM completely now (not in the picture) and put it aside and am using the existing J boot so far to an air filter behind the head light. Plans for the car include fabbing a S/S J boot replacement when the car comes out of storage in the spring.

IAT sensor/bung installed in the charge pipe.
Old 12-24-2016, 05:39 PM
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NCLA951
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Did you just turn the j Boot to face the headlight section? How did you deal with AOS etc?
Old 12-24-2016, 07:10 PM
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My original thought was to flip it for a temporary solution when I first was tuning the car. Instead, I used a narrow radius steel/muffler pipe to change directions and get the filter to the corner. Not an elegant solution as the pipe needed to be deformed to clearance the charge pipe, but it does leave the AOS/vacuum connections intact.


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