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Senior Member
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Discussion Starter #1
For those with a VPC on stock twins...what intake are you running now that the MAF is removed??

I've seen the HKS kit from MVP, but are there any other options?? The HKS piece extends so far forward that the only filter you can attach is the HKS Mushroom.

So I am looking for other options that can use a cone type filter.

Thanks for the input!!!
:)
 

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Can someone post a photo of an angine bay shot with the VPC and another intake installed like hes talking about, I dont think I have actually seen a good detailed shot of what it looks like with the VPC.. thanks.
 

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Discussion Starter #4
Great pics Kevin!

With a VPC, the MAF is eliminated, requireing a straight-through intake simliar to intakes on single turbos....most single turbos have the VPC to control larger injectors!

Basically, the MAF restriction is eliminated because the VPC uses a temp sensor threaded into the throttle body and a DENSO pressure sensor that takes it's reading from the fitting on the throttle body where the PS pump is currently attached to.

Anyone else have pics of a cone type straight-through intake on stock twins???
 

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Discussion Starter #6
fusion1 said:
I'm using the Blitz intake with the VPC on my car. No pics right now though.

ian

Ian: How do you like the VPC on your car? How long have you had it and how reliable is it? How does the car idle, accelerate, and otherwise perform vs. stock ECU/MAF combo?? Is the power increase noticeable?

Just wondering.

Also, where did you get the intake from?? Does it come with the aluminum hard pipe straight through to air filter...no MAF location?

Thanks!
 
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The K&N RC-3600 cone filter will fit on the HKS intake pipe when using the VPC.
 

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Discussion Starter #8
stoker6 said:
The K&N RC-3600 cone filter will fit on the HKS intake pipe when using the VPC.

Any pics?? Thanks!
 

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The VPC is okay. The car seems to idle much worse since the install. I haven't had the time or the cash to get the VPC/GCC tuned yet. Right now I just have the idle dial turned clockwise a couple of clicks to help get rid of some of the roughness.

I fabricated a small piece that connects the filter to the piping.

I will be taking some pictures of the car soon and try to post them to the forums or list when I can.

ian
 

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Discussion Starter #10
May be your plugs.

I changed my plugs over the weekend also. I'm trying the 6097's gapped at .0315. The idle is VERY smooth just about 700 RPM and rock steady!!! When I first started the car it was rough since it was re-learning the fuel curve. But now, it solid! I double checked the dip switches on the inside of the unit and also the chip to make sure they were correct. Then, just installed it via instructions. The pressure sensor is by itself connected to the fitting used for the PS. The PS is then T-d into another manifold fitting.

I have all knobs at 12 O'clock. The car is running a bit rich on top which is good until I can get it tuned next week.

Also, I connected the BCC into the VPC harness.

Good luck in getting it to run right.

Regarding the intake, I'll be getting a custom piece fabricated...will save me some big $$$ over the other off-the-shelf intake pipes!

fusion1 said:
The VPC is okay. The car seems to idle much worse since the install. I haven't had the time or the cash to get the VPC/GCC tuned yet. Right now I just have the idle dial turned clockwise a couple of clicks to help get rid of some of the roughness.

I fabricated a small piece that connects the filter to the piping.

I will be taking some pictures of the car soon and try to post them to the forums or list when I can.

ian
 

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I use a blitz intake and everything works fine...as far as the idling goes everything is fine there as well, haven't had any problems with the VPC at all.

Tony
95TT6SPD
[email protected]
 

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Discussion Starter #12
I ended up buying a 3.25" diameter PVC coupler...errr...making a coupler. I could only find a 3.25" diameter PVC coupler that had a ridge at one end and a 4" flare at the other. So I cut the ends off to make a 3.5" long peice. I also had to champer (sp?) the edges on one end that fit where the top of the MAF did. Then, I used a 3" rubber coupler with a metal sleeve and hose clamps to connect another shortened 3" PVC bend with a 4" flare....to a K&N Cone filter. Total cost $60.00.

Basically, the same as the K&N mod on MKIV.com...with the extra coupler to eliminate the MAF.

Now without the MAF restriction, the car BOOSTS much higher at my current settings. I usually boosted 1.25 kg/cm2 at a setting of 52 GAIN on my Blitz DSBC. Well, now it will boost to 1.35 at that setting. I had to turn it down to 48 to keep the boost near 1.21 in 3rd gear (80-120 in an auto)

So the elimination of the MAF restriction has definitely freed up the intake airflow! If you look at the inside of the MAF you can see why!!!
 
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