TT Conversion Questions

[ilian51378]

What type of vacuum lines should I buy? Can these be found in a regular auto parts store?

[sergechronos]

What type of vacuum lines should I buy? Can these be found in a regular auto parts store?

You can get vacuum lines from an auto parts store without too much trouble, a lot of guys just buy silicone vacuum hose though. If you want to run waste gate boost, run vac lines from each waste gate, as equal length as you can, to a T fitting (you can pick these up at an autoparts store pretty easy). Run a line off of the open port on that T fitting to the nipple on the Y pipe leading to the throttle body.

[ilian51378]

You can get vacuum lines from an auto parts store without too much trouble, a lot of guys just buy silicone vacuum hose though. If you want to run waste gate boost, run vac lines from each waste gate, as equal length as you can, to a T fitting (you can pick these up at an autoparts store pretty easy). Run a line off of the open port on that T fitting to the nipple on the Y pipe leading to the throttle body.

Will do that, thanks!

[fastbikes76]

Well, I am going to run waste gate boost for now. I was told that I do not need a boost controller at this stage, but I may eventually want one in the future, if I decided to up the boost.

Yeah defo run waste gate too start with and check for knock very often. On our crap UK fuel i was getting knock at waste gate (5.5psi roughly) which was annoying. Im now running 20% methanol in tank and pushing about 12psi knock free.

[ilian51378]

Since I have a GTO, there is only one O2 sensor. Well, on the OBX down pipe I bought, there are ports for two O2 sensors. In that case, could I use one of those ports for my wideband or should I install it somewhere else?

[ilian51378]

Yeah defo run waste gate too start with and check for knock very often. On our crap UK fuel i was getting knock at waste gate (5.5psi roughly) which was annoying. Im now running 20% methanol in tank and pushing about 12psi knock free.

I hope I won't have to do that...

[fastbikes76]

Since I have a GTO, there is only one O2 sensor. Well, on the OBX down pipe I bought, there are ports for two O2 sensors. In that case, could I use one of those ports for my wideband or should I install it somewhere else?

As long as the port is AFTER both turbo's merge then yes, that is fine for a WB.

I hope I won't have to do that...

Its mostly down to our crap fuel. Ive literally just got back from Vegas and noticed your V Power is rated as 91, our V power which is the highest rated fuel available here apart from full on race gas is 99.

Your fuels are much better at supressing knock than our junk

[ilian51378]

you can run without the cooler if you not tracking the car etc, obviously the ideal is to get a cooler on there before really pushing the car. To fit the cooler and lines later you only have to remove the wheel arch liner and plastic cover on the side of the engine/wheel arch. Not a bad job at all.

Are you still on the 10:1 engine or have you fitted a TT engine ? I have had my 10:1 running for a couple of months now and its great with the short NA AWD box !!!

Good luck

I am trying to install the intercoolers and it seems so hard to get the right side to fit in with the AWD ATX... How did you get it to fit?

[sergechronos]

Since I have a GTO, there is only one O2 sensor. Well, on the OBX down pipe I bought, there are ports for two O2 sensors. In that case, could I use one of those ports for my wideband or should I install it somewhere else?

After the merge is best, of course it will require getting a bung welded in down the pipe. If that's not possible for whatever reason (in my case the DP is welded to the catback so I can't take it anywhere as is) I would at least run it temporarily in the 2nd spot. Better than nothing. Get a bung put in after the merge as soon as is possible though.

[ilian51378]

After the merge is best, of course it will require getting a bung welded in down the pipe. If that's not possible for whatever reason (in my case the DP is welded to the catback so I can't take it anywhere as is) I would at least run it temporarily in the 2nd spot. Better than nothing. Get a bung put in after the merge as soon as is possible though.

I am thinking about installing a bung on the test pipe and mounting it there...