Help! Making A Dose Pipe

[DanielH]

Hey guys,

Never made a dose pipe before but i have just turbo'd my mates 31 with a T3/T4 T04E and was playing around with various suggestions i found on the net but with no success, anyhow he isn't really fussed whether his dose's or not but i am about to turbo my 31 to give to my girlfriend and she really wants it to dose, so if anyone could help me out with some measurements or even better, pics..that would be awesome

Thanks, Daniel.

[Borci88]

2.5" Silicone Joiner, 2.5" or 3" wide, 17cm long piece of pipe preferably 45 degree angle, Attach to mouth of turbo, attach some memory hose to the end. It's actually the easiest thing to make, if you need measurements then you probably shouldn't be doing it There is no "Right" way.

[DanielH]

Ah cheers mate, i tried a piece of short 3" steel pipe, also a reducer and short 2.5" steel pipe, and also a couple of different sized elbows, all i could seem to get was the usual compressor surge noise i wasnt driving it when i tested it though, just revving it

[DanielH]

Is it crucial for the pipe to be 17cm long? im not sure how long my bits were, just offcuts..

[zoidbergmerc]

I've fkt around with dose pipes for about a million years now.

I had the same turbo on my VL.

The best dose I could get was a 3" > 2.5" reducer to a straight pipe 11cm long with no pod on the end.

Any bends take the volume right out of it and making it longer makes it deeper.

[jangles]

and you should drive it, just like any bov, wastegate etc, it wont compressor surge if it isnt making boost/under load

[DanielH]

i wasn't able to drive it as it wasn't finished yet but i was able to get it to surge pretty easily by revving it like in the video above ^ ... but i will drive it next time just to be sure.

Also what is clamped in the end of that pipe peter ?

[zoidbergmerc]

it's just a joiner on the end of the tube.

[XRATED]

was if fully sick flutter dose??

[zoidbergmerc]

Did you watch the video?! It was fully hektikx

[Bushy]

That is filthy zoid!! Love a good VLT dose!

[tweetywoof]

AFM in the cold side also makes it surge more doesnt it?

i wanted to put the AFM on the cold side on my exa to get hektik flutterzzz bro

[zoidbergmerc]

yeah you want the AFM as close to the Throttle body as you can get it. Better for dose and not breaking under reversion.