wrangler remote mount boost Q's
 

I have just finished the install (minus the intercooler) on my 2.5L wrangler.

Turbo is a Garrett T3 .48 exhaust with a junky .50 compressor side that I swapped on. Turbo was originally a .48 .42. Compressor side was just waaaaay small, so I figured I would try the .50. Looks like the turbo is off of a VW from the garrett tag on it.

Now here is my question. I figured that with this small of a turbine that the boost would come on almost instantaneously. Boost doesnt even start until almost 3K. On a motor that redlines at 4500 this just doesnt cut it. Is there anything that would make it spool a little faster? I dont mind having the boost at 3k but I wish it came on about 1800 to 2000 rpms. Would a restrictive exhaust (cat back) make it spool slower than it should?

Also the turbo is internally wastegated at 7psi. The wastegate is a dual port and does not have an arm connecting to a flapper, instead the diaphragm portion in mounted directly on the turbine housing with no visible parts. Question here is...anyway to bump that 7psi down to 5psi on this type of wastegate?

Here is a pic of the setup before I put the garrett on and a pic of the rig. Dont mind the mess under the hood, still trying to figure out the best place for the intercooler.

Attachment 20378

Attachment 20379

Re: wrangler remote mount boost Q's
 

Setup looks sweet. Take some more pics!

Did you hook the turbo up to the stock exhaust with the cat? If so that's a problem right there.

Re: wrangler remote mount boost Q's
 

Not the stock exhaust, but by no means is it free flowing. I hooked it up as a temp. fix until the rest of my bends come in.

thanks for the reply. I will try to get some pics tonight.

Re: wrangler remote mount boost Q's
 

Stupid question but I have to ask, did you replace both the housing and the compressor wheel?

Nice lookin setup man

Re: wrangler remote mount boost Q's
 

The larger and the shorter the exhaust the better.

Also did you take that small pipe and filter off the turbo compressor yet ?
If you restrict the air coming in it will also effect your spool.


Thing looks sweet. Get more pics of everything.

Re: wrangler remote mount boost Q's
 

thats what i was going to ask as well

Re: wrangler remote mount boost Q's
 

Yes I did. And thank you.

Re: wrangler remote mount boost Q's
 

My vote is for restrictive exhaust.

Re: wrangler remote mount boost Q's
 

I have not run it yet without the filter because in the dusty environment that this gets run, it needs to have a filter.

The setup looks a little different now with the smaller turbine housing and a new filter. I will get more pics but I need to wait until the camera battery charges.

Re: wrangler remote mount boost Q's
 

This seems to be the collective idea, so I think tomorrow I will pull from the cat back and see if I cant get it to spool a little faster.


One more question.....Would there be any issues with removing the pcv's and just running small filters on top of the valve cover? Or do I absolutely need a catch can setup? Seems this is one step that I had overlooked.