I've searched and I'm not coming up with the info I need for going with open dump on a TN kit. I'm not all familiar with dump system, accept for what I read on here.

So on a TN kit, what would I need to do on this kit to run this system? Keep in mind with the relocation pipe. Is it simple as just removing the pipe that bolts up to the wastegate and capping off the other end where it vented back into the downpipe? On the TN kit there are two pipes that come from the wastegate to vent back into the downpipe. Could I just leave the one pipe that comes directly off the downpipe on and cap that off, so I wouldn't have to remove basicly the hole kit to get that part of the pipe off (I wouldn't think it hurt)?

Do I have the right idea or am I way off? I want to try it out on my kit to see what it's like.

 

I wouldn't recommend running an open dump system, it might create some overboost issues. Just my opinion.

-George
GT Motorsports

 

Running open dumps hasn't caused anyone an overboost issue that I have seen yet. That being said you have to be very careful to route the dump away from any boost signal lines. If you melt through one the wastegate will no longer have the signal to open at 9 PSI..

 

I don't agree. Due to reduced backpressure and turbulence on the wastegate dump, I believe it would actually even relieve boost creep due to the fact that there would then be less resistance for air entering the wastegate as opposed to continuing on to the turbine. (hope that made sense)

 

Thanks for your opinion on this. But as described above, do I have the setup right for allowing for a correct operation of running a dump system on this kit?

 

Well I like my set up. I took the pipe right off to the left from the WG and cut the flange off. And then capped the Downpipe and your set.

But I had really bad overboost issues. Sam thought it was due to this and my HKS TD exhaust.

But it sounds sick.

Look up Ipcheck he posted his pics of the WG dump. Its the same as mine

T

 

I looked up Ipcheck and his situation seems to be the same as yours and as George stated above, such as overboost problems.

I'd like to ask do you have overboost problems before hand? And do you have the relocation pipes too? Trying to put all the facts in order to make up my own mind.

 

Even with the wastegate dump there's absolutely no way it would make it spike to 20psi.

Look further back in IPCheck's posts. He actually resolved the spike issue originally by changing to a smooth dump tube instead of one with ribs that was restricting exhaust flow.

 

Oh, ok. I didn't go that far into it. Just trying to look at every aspect to know all the in's and outs of what was and what is. I'm still very much considering going this route and run them.

 

Well I looked back further and everything seems to be ok with running the system. Just need to make sure I route the vent away from signal line, in which you almost only have one choice to route with relocation pipe. Thanks for everyone's help.

 

What I was referring to is problems we have experienced with the Turbonetics kit and open dumps. On Taylor’s' car for example it created over boost issues even with the 5psi spring on the WG, but it could have just been this particular car. All I was trying to do is help a fellow board member out so he doesn't have any issues

Either way, let us know how it turns out!

Take care,

-George
GT Motorsports

 

Give us an update on your findings with this. I'm thinking that with that relocation pipe it shoudn't be too big of a deal.

 

we did an open dump on my techs car, GET rid of the turbonetics WG, i hate those things. we used a tial 38mm with open dump and just blanked off the bottom of the old WG return.


his car went 12.0 at 116 with full weight and only 8 psi!!

we will hit 120s soon with it, maybe next week


also, open dump actually holds the boost WAY better, it is rock solid!!

hey i just noticed you are in GA, bring that thing to me and i will do it for ya , the right way!!

 

100% correct...except for the part about bringing it to your shop. Chris is a longtime customer of FP.

Knowing Chris, he will probably want to try it himself....which is great. If not, we're here for ya!

 

Chris I see you got on the dyno saturday, how did you do?

 

I wonder if it was the WG then thats making the difference ?

T

 

not sure, i just know the car hauls A$$, we are playing with it again on sunday, going to try to take some new titles, fastest TN ST, fastest Stock Block Turbo, hehehe



sorry sharif!!

 

keep us updated. Im thinking of swapping to a T66 and making a 3' downpipe and I figure your going to have to upgrade the WG.

T

 

That's about right Sharif. I waiting now for my manifold, so I'm on some down time. No big deal. So far as the dump tube, I might have you make something so I won't have to cut the pipe that's already there, in case I want to return it back to normal. I'll get back to you when the manifold gets put back on and we'll probably do the wideband all in the same day.

Thanks for the invite Audible.

 

It did pretty well. About the same as it's always been. I like the fact that the car feels strong and solid on the streets. I'm currently changing to the Crawford manifold. So I hope to gain a little from it, compared to the SSV (LOL).