-- Attention owners of Stage One Tuning MP62 Supercharger kits --
As distributed by Static X Motorsports:

We have been made aware of a potential safety issue in which you may experience a labored or sticking throttle. With the feedback from our distributor and those reporting the issue we believe the source of the issue has been identified and related to recent material change, heat and humidity. Due to the time of the material change we believe this potential for a similar issue is isolated only to the most recent kit sales.

However, we are making efforts to contact all previous owners to inform them of the reported issues and offer them replacement part, regardless of when their kit was purchased and regardless if they have experienced the issue or not. Again, we believe only the most recent of kit sales could potentially have this issue.

The drawing for the part was revised back to it's original material which we've seen no issues from. The replacement part was put into production immediately and we expect to have them as early as today or tomorrow to then be shipped out to customers.

We have been unable to reach a couple customers using the information we have on file, so we have asked the forum administrators for permission to post here in the hopes of making contact. If you are an owner of this kit (or know someone who is) please contact us for more information:

contact_sot [at] stageonetuning [dot] com
800-349-3156

Thank you, and thank you to administrator "Hondagal" for allowing this post.

------------------------------------

-- Since yesterday, the time of requesting permission to post this, we have contacted all but one owner.

 

good customer service!

 

they have been awesome! glad to see everything is getting taken care of quickly!

get all those boys back on the road ripping it up

 

Update!

Well after a few LONG weeks of not being able to drive my car because of this issue I am finally back up and running.

I am happy to say that the SOT & SXM group have done all they could do to quickly resolve this issue. To be able to recognize, diagnose and produce in roughly 2.5 weeks is pretty good i think. Now I know this isn't a mass produced S2K kit, but still they took immediate action and worked closely with the customer and dealer.

I am going to get to finally enjoy my F/I S2K! The day I picked the car up from a new clutch install the TB got stuck. And before that i had too much slippage to have fun. So I never have really got to experiment with the whole package like it was intended. Hopefully now that is behind me and i wont see any issues for a while!

Thanks to all that helped resolve this issue!

 

I know this is an OLD post and an OLDER problem, but sadly I have this issue, and haven't been getting any love from Barker products, and while I've been in touch with James, I don't have the information I need. I'm willing to fix this myself, or even fab the part myself, but I don't know precisely what to fix. Here's what I know so far:

1. It's the TPS that's the issue, just inboard from the BTB assmebly at the air intake end of the supercharger.
2. It's not anything on the outside of the air path, becuase I've disassembled and reassembled all the external parts of the throttle array.
3. I have a carbon or plastic part that everyone else in the world calls a supercharger coupler, it's a small donut/torus with 3 holes around the torus. Is this the part I need to replace? I don't think so .....
4. As I remember the brass butterfly used to stick when I would dink around with the parts before installing it. The throttle only sticks, however, when underhood temps are above 140f or so.
5. My next step is to take off the air intake assembly (air filter, hose and 90 degree coupler) to look inside the air pathway to see if I can tell what's sticking. This may help me ID the right part.

Can anyone who has installed the fix tell me what the part looks like (I know it's related to PN BRA-200-080), and where to install it? I can probably figure out the rest. Or just give me some pointers? I'm going into summer and as you know the sticky throttle isn't any fun in traffic.

 

I actually have the new part but never installed it (although I am not sure I want to part with it).

Here is how you fix it:

Remover the throttle body, either with or without removing the blower. It is EASIER to remove the whole blower. I am not at my car right now so I don't know how it looks but once you see the throttle body you will see the white plastic spacer that has a couple raised knobs on it and you have to remove that. It is at the center of the whole rotating mechanism, you can't miss it and is the only white plastic piece in the whole throttle body. It is just wedging inside the chamber it rotates in so I sanded mine down around the circumference so it would no longer wedge in the chamber when it expands. So I basically made a slight flat spot at 12,3,6,and 9 oclock, and took a smidgen off the rest of the rounded surface. It has a bit more play in it now, but it has NEVER been an issue since and works just fine. You just need to work off enough material so that that the round peg won't wedge in the tight round hole when it expands. Essentially you need to reduce the diameter about a millimeter or two and give it some wiggle room.

It is so tight that moisture has an effect and a drop of water on say a rainy muggy day will make it stick.

The new part was the same just a slightly different material that did not expand so much, but reducing the diameter a smidge will work just the same. If you reduce it a bit and set it into place you will still see it will work fine and is not going to go anywhere. Just reduce it enough to make yourself sure it will never stick again. Mine got stuck and had to cut the engine on an uphill crowded freeway bridge with no shoulder. That was the scariest thing I have ever experienced, getting out on a bridge and working it free enough to start the car and get off the bridge.

It will be perfectly self explanatory when you remove it and look at it.

 

Thanks --- not sure what the throttle body is and isn't, I _think_ it's literally the part with the air restrictor/butterfly (aka throttle) that mounts to the intake of the blower at the rear, which has the 3-piece black aluminum mount for the throttle spring and position sensor. If that's the case then I can remove it without removing the blower. Can you verify that's the throttle body?

There is a gasket between the throttle body and the end of the blower (as well as the end of the blower and the blower housing). This cannot be a high pressure gasket and a little leaking won't kill me -- I hope. Did you replace the gasket when you reattached the TB? )

Let me know if I'm thinking of the right part.

Also, it's inside the throttle body? IT's white plastic? I have a black plastic piece that lets the butterfly seal against, around the inside circumference of the airway. It's not that piece, though, correct? Then I assume its on one side or the other where the butterfly pegs mount to the TB?

 

Yes that is the throttle body.


I just looked at me car and can't remember how this plastic piece comes off but I think it is right under the sensor. Once you pull the blower and remove the sensor you will be able to see how the piece comes out if I remember correctly.


You know what, scratch everything I just said. I had to remove the blower to get the throttle body off and test what was wrong. I did this with SOT when this first started happening by putting my throttle body in the oven to see what was the problem and actually help them identify what it was making it stick. So I had to have it off to see what was going on, but I think you can get to the spacer with everything still on the car. I think you can just pull the sensor off and see what I am talking about and remove it.

It looks like you can pull off what you need to fairly easily but you will need a multimeter to reset the TPS (throttle position sensor). If you need help PM me and I will send you my number and you can call me when you are trying to fix it and I will walk you through. It sounds like you did not do the install. I have the original manual which I could probably PDF some day and send it to you, I would have to bring it to work and scan it.

 

The sensor is the electronic piece on the outside of the TB mount, with two wires coming out of it, right? I mean it's outboard of the whole thing and attaches to the 3 piece aluminum bracket that goes around the throttle spring -- right? I do know there's a disk inside of that, has basically a slot that can read what position the throttle is in. Is that's what's sticking? If so it should be pretty easy to fix .. and it's smaller in diameter than a quarter. I was going to test this by removing the sensor after it was all heated up and see if there was still any sticking, but fooling with all that at 170F isn't a lot of fun, nether is letting the car sit there long enough to warm up.

So it's NOT inside the airflow pathway where the brass butterfly is, but it is part of the electronic sensor that is attached to the outside of the thing? The reason I'm asking is because i haven't been able to see inside the blower pathway other than with my iPhone in movie mode, and while I don't _think_ there would be any reason for a sensor to be inside the air pathway (we have a MAP sensor in the manifold for that), I know enough to know that I could easily be wrong.

Not in front of the car right now or I'd have torn part the external sensor to check it out already

PS: Thanks for helping out

 

PS: Correct I didn't do the install myself, but I do have the instructions. I'm assuming I have to use the multimeter to recalibrate the TPS. No problem there, as I remember the instructions are pretty straightforward.