Turbonetics tried that already...it needs to be moved...

 

I think it was moved cause it caused back pressure in the down pipe I might be wrong it looks like they extended a tube so exhaust gases would not slam into the flow of the exhaust after the turbo which creates back pressure. Im just try to figure out a solution cause I just purchased a kit in the begining ofJan. and they told me the fix was a special request they will not be implementing them in there new kits it will be a seperate buy .

 

No. They just relocated the WG so that it flows better. If you look at the old position it was at 90 degrees to the flow. Now it is right in the stream more or less. All up pipe related. Boost was rising because not enough relief from the WG which was all due to the position (flow was bypassing the WG).

Chances are you will not have the problem without the relocation but I am sure they will be addressing this in the new kits and retrofitting people that have the issue with the older rev. kits. Don't sweat it. Do your install and if you have overboost problems then call and get the relocation.

 

Yeah, thats what I was refeing to the flow.....hopfully I wont have a problem I just dont want to have to make fix, I would like to get it right the first time. If you say flow was the problem then I dont understand why venting to the atmoshere would not work I me common sense tells you exhaust gases would flow unresticted if vented to the atmosphere rather than through a tube.

 

I feel bad for guys that have paid to put on kits and have to pay again for the fix. TN said install was 8-10 hours, but 95% of shops charge 12 hours or so taking their time, Im sure it will cost those who already installed the kit a few hundred $$$ in labor to correct it. I would wait for the fix before putting it on my kit if I was doing it now, I agree with Mikea about getting it right the first time.

 

well i had 3" dual piping and and over boosted one night 14psi.. greddy gage 1 bar stock exhaust hiting 0.4 bar till 5500rpm then it goes to 0.6 bar up by read line an shift hits 0.7 bar and i spent around $650 switching springs and re-dynoing

 

The issue has nothing to do with WHERE the wastegate vents TO but rather WHERE the exhaust gas is venting FROM. The fix does not change the positioning of the wastegate dump tube. The flow be dumped back into the downpipe has no effect on the overboost. The problem is that with an EXTREMELY high flowing exhaust the pressure differential behind the turbo changes and the current wastegate opening that the exhaust gas should flow through to bypass the turbine is not being bypassed. The change in backpressure makes the path of least resistance the turbine as opposed to the wastegates open valve. By moving the wastegate forward and coming off of the turn up into the turbo the exhaust gas has a more direct path with which to leave the exhaust pipe and go out the wastegate. Again running to atmosphere does not fix this, changing to a bigger valve in the current location does not fix this, the only thing that fixes this is moving the wastegate. The reason why they do not want to start promising pipes to people that don't already have the issue is that they want to get everyone who DOES have the issue taken care of. IMHO thats the right move. If you have 14 customers who need help NOW and 10 more that may or may not need it later which ones do you help? For those that are getting the kits now its not guranteed you are going to have an issue. Lets talk numbers. Turbonetics has shipped 180+ turbo kits. So far Reggies list of people who had this issue is 17. Thats less then a 10% chance its going to happen. Is that acceptable..no..thats why they made the fix. But its also why they are going to take care of that 10% before they send the pipe to someone who does not have the issue.

 

You have to realize not everyone that has TN is a forum member you have no idea how many people are haveing overboost issues my thing is that there is a design defect in the kit and it should be corrected which it is, but only upon request...any kit that are purchased from here on out should have the fix IMO. About the position of the wastegate your right obviously its fixed the problem.

 

Thats correct not everyone is a forum member. Only 9 people on the forum list but 17 people have called Reggie about it. That means theres 8 people unaccounted for. And the fix is not just fixed upon request. The fix is being applied to ALL KITS THE SHIP FROM TURBONETICS STARTING MARCH. There will not be another batch of Z kits shipped before that I know of. If anyone is getting kits from now until March 1 its probably stock from a vendor. Turboentics is personally making these fix pipes for those people that already have the issue. Any NEW kits that are produced by Turbonetics and shipped will already include the fix. If you are receiving a kit that does not have the fix it came most likely from vendor stock. Just to clarify, it is NOT a fix on request issue. It is a system wide fix that will be applied to ALL new kits. It does however take time to change the jigs already made for the kit and re-produce all the up pipes they already have made. Thats why the fix application to all new kits is listed as March 1. All the fix pipes going to people with issues are being hand made in house out of current stock to make sure they get them as fast as possible.

 

Okay, that sounds a lot better I ordered my kit on Jan 5,2006 and its being drop shipped so you are telling me I will not recieve it till March if thats the case that sucks.

 

I don't think he said that. I think what he said was that any kits made after March 1 would have the new wastegate position. Until then it is on an as needed basis. Depends where you are getting the kit from I guess.

 

Relax Mikea you have to understand MIA's point. What I would suggest to you is keep your stock exhaust on until you get the fix. Like MIA said you most likely wont have the problem.

What exhaust are you running or planning to get?

 

Well after talking to TN I will be sticking with the stock exhaust like you said, but I plan on getting one of the JIC exhausts.

 

Add me. hks/3'

 

1. JETPILOT / TopSpeed Pro-1 / 3"
2. kcobean / Greddy Evo 2 (modofied)
3. Eckzlnt / NISMO Clone / 3"
4. 35Ounces / NISMO / 3"
5. RED HOT Z / RS*R Exmag GTII / 2.75"
6. xluv2eatx/ topspeed / 3"
7. Shalopay33 /NISMO/ 3"
8. Blu_Blur / Greddy EVO II (Modified)
9. Z PHAT Z / Borla TD exhaust (modified)

I'm hitting 10 psi last dyno.

 

1. JETPILOT / TopSpeed Pro-1 / 3"
2. kcobean / Greddy Evo 2 (modofied)
3. Eckzlnt / NISMO Clone / 3"
4. 35Ounces / NISMO / 3"
5. RED HOT Z / RS*R Exmag GTII / 2.75"
6. xluv2eatx/ topspeed / 3"
7. Shalopay33 /NISMO/ 3"
8. Blu_Blur / Greddy EVO II (Modified)
9. Z PHAT Z / Borla TD exhaust (modified)
10. D350Z10/ Greddy Evo 2 cant go below 9psi.

I already sent reggie a pm a week ago does this list matter?

 

other than the piping fix. can boost be dialed down via boost controller?

 

No. Boost controllers can only be used to raise the boost above what the turbo system would operate at without the controller (normally that would be the wastegate spring tension, but in this case, it's something higher.)

 

+1 You could always install a lower PSI spring and then use a boost controller to up the boost to just 8 or as high as you want.

 

Too light of a WG spring may cause the valve to open prematurely and slow turbo spool up without electronic boost control to pressure the valve closed.

Respect
JET