How Can I Make the WG Open at 5 psi?
 

Gay question, I know but my wastegate is set to open at 7 psi, and it's pinging like a bitch a 7 psi (high compression engine - I'm running standalone and a wideband - everything else is fine).

I want to back it off to 5 psi - is there a way to mess with the wastegate actuator to make it open sooner?

Re:How Can I Make the WG Open at 5 psi?
 

what kind of turbo?
adjustable wastegate? if so loosen the screw
right tighty lefty lucy:P

Re:How Can I Make the WG Open at 5 psi?
 

It's a Mitsu TE04H, internal wastegate.

Re:How Can I Make the WG Open at 5 psi?
 

Retard the timing. :P

You can lengthen the actuator arm, but that causes lag and increased spool time. :-\
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Re:How Can I Make the WG Open at 5 psi?
 

Thanks DrB,

I've lowered total timing to as much as 10 deg. total advance, no change.

How do I lengthen the arm?

Re:How Can I Make the WG Open at 5 psi?
 

You can lengthen the arm by shimming the actuator to be closer to the WG, or you can get creative and use a piece of all-thread and cut the arm in half. You just need to open that thing a little bit. Some washers should do the trick, depending on the mounting of the actuator.
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Re:How Can I Make the WG Open at 5 psi?
 

stand alone and a wideband at 7psi and your knocking?? What c/r is your engine? are you using cheap ass pump gas

Re:How Can I Make the WG Open at 5 psi?
 

It's 93 octane, and the CR is 9.5:1 , kinda high but not crazy high.

I'm running 20 degrees total advance at 7 psi - is this too much?

I may just say ---- it and build a boost activated water injection unit. Just see if I don't, bygosh

Re:How Can I Make the WG Open at 5 psi?
 

if its not adjustable ive heard you can shim it reversly to get the opposite effect of shimming for more boost. in theory this would work, because the opposite of adding boost is taking it away right . ;D

but then again ive seen some turbos that have the WG pressure bonded to the housing so not sure a pic could help

Re:How Can I Make the WG Open at 5 psi?
 

Yay, it's got 2 bolts holding it on, I could totally shim it, but it's deep in the bowels of a VW Rabbit engine bay - it would take a while to get to it. ----, I may just gove it a shot tomorrow and see.

Re:How Can I Make the WG Open at 5 psi?
 

you could also bend the mounting bractet back towards theexhaust hounsing.

NOTE:after thinkin about it theres no way to shim it backwards!!!

http://www.we-todd-did-racing.com/we...MXk1NDE%3D.jpg

by putting washer behind the acuator itself you would raise the boost not lower it

Re:How Can I Make the WG Open at 5 psi?
 

Did you really just post that? I wish you luck in your future. If you haven't breeded yet, please don't.

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Re:How Can I Make the WG Open at 5 psi?
 

there is no reason you should be detonating @ 7psi especially if you have a wideband to tune with. i think you need to re-evaluate everything timing related

Re:How Can I Make the WG Open at 5 psi?
 

^ Yeah for real... turning down the boost has nothing to do with reliability. Good tuning = reliability and with a stand alone, you shouldn't be having a problem.

Get your ---- tuned.

Re:How Can I Make the WG Open at 5 psi?
 

Thanks guys - it really was the tuning, but it took me for freaking ever to figure this one out.

I'm using Megasquirt'n'Spark-extra as the standalone, the software has a hard fuel cut at a specified level of boost - it was preset to 7 psi - I didn't even know it had this feature, I just chanced upon it. I set it to 11 psi, upped the boost to 10 psi and now my little stormtroooper is haulin' ass. ;)

Re:How Can I Make the WG Open at 5 psi?
 

hey bee like junkyardracer and use a chain and a spring and just take your wast gate off ;D

Re:How Can I Make the WG Open at 5 psi?
 

BAHAHAHA!

Re:How Can I Make the WG Open at 5 psi?
 

you can shim it backwards by putting the washers on the side near the compressor, by shortening the arm u would be lowering it not raising it. your a dumbass =x use your head and be creative bitch =x

Re:How Can I Make the WG Open at 5 psi?
 

lol, you sure about that? :P
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