Ok, so I know there are a few other threads floating around discussing similar topics with cutouts, the trackforged piece ect ect.


I wanted to start one up, and not clutter the trackforged group buy thread up.

With the growing number of FI s2000s eclipsing the 450+ whp mark, with rather ease these days, A lot of people are looking for street friendly exhaust setups.


Not everyone wants to ride around town with a booming 3" full exhaust, or an open downpipe. Hell, some people want to keep a stock exhaust.

Which brings me to why I wanted to create this thread.


I personally have been digging around for good solutions here, and while I've found a few , I wanted to get this thread running to see what others have done/think.


I currently have a T1R 70EM dual sparrow that I absolutely WILL NOT part with. I love the look, and sound of the exhaust. It is however, incredibly restrictive in an FI application.


I originally wanted to go with the SP designs boost actuated cutout, but with a price tag of over $500 (before installation) and seeing trackforged use a cheap waste gate in stream with the exhaust, it got me thinking, why don't more people do this?

It seems like a nice alternative to the SP cutout (and is much cheaper).

My problem with the trackforged piece is that not everyone runs a stock length downpipe, or stock exhaust on the back half, so you may need to modifiy.

My thoughts:

Purchase 1-2 cheap wastgates, weld them into my downpipe under the car, run vacuum lines= Winning?

This would allow me to still make big power, be quiet around town, and keep my exhaust that I love so dearly.

What do you guys think?


DISCUSS

 

Interesting idea. Would you run a low pressure spring in the gates? What size gates are you considering? Mounted sequentially on the downpipe or one one each side?

 

I have not done this personally but have seen it done and did the welding for a guy that did it on a fox body. it works, just a bit more expensive than an e-cutout.

 

I'm actually in the exact same situation. The T1R sounds godly at WOT, and I don't want to get rid of it. I've also looked at various avenues for cutouts, and there really seems to be a few different types.

Manual:

You get out and under the car to uncap it. Simple, effective, but isn't what I'm looking for (who wants to monkey around their car every time they want to go full power?). Lots of companies make them, or one could make one.

Electric:

QTP and DMH seem to be the two most commonly used. From what I've read, they either get stuck, fall apart, or rattle after a year. No acceptable.

Boost actuated:

ATP and SP are the only two I know of. ATP's is always back-ordered, so SP is really the only one that does it. It SEEMS to be the best design since the actuator is being used to open a valve in the pipe, rather than relying on the wastegate itself to regulate flow. My biggest questions for the Trackforged Evac pipe would be, how much MORE power is it? How does it compare with an actual 3" exhaust? The SP cutout?

My other general questions for other people with cutouts would have to be

- What cutout do you have?
- How long have you had it (reliability)?
- How much power did you get out of it?

I feel like some of this information is spread around a lot, and not a lot of specifics, reliability in particular. I think if we all share our experiences with cutouts we can weed out what really has worked and what hasn't.

 

I've tried making a dual wastegated test pipe but the weight of 2 44mm gates was so heavy! Currently, I am modifying a used E-cutout to be boost activated.

 

Yeah you would definately want to brace the downpipe somewhere and a flex pipe. it does sound like the weight would get a little crazy. I think its a good idea and should work well.

 

Certainly would run a low rate spring, maybe like 4-5 psi or something like that.


as far as placement, I would feel most comfortable mounting them somewhere around my testpipe section, leaving the downpipe to still be easily removed for maintenance.

 

Im looking in to the same set up im going to run a stock exhaust 3.5" down pipe in to 2 44mm wg

Then reduce after the gates to stock size pipe for exhaust with this set up i should have no problem going to the 750whp mark i want

I will run 3psi springs in each im thinking

Sent from my DROID RAZR using Tapatalk 2

 

I just got a SP cutout installed for my stock exhaust. I use a boost solenoid and EMS boost control to control when the valve opens.



I was looking into getting the Trackforged cutout, but backed out the group buy. I am not too worried about saving a couple hundred dollars. The SP cutout has been around for years and is proven to work good. Car will be on the dyno in the next month.

 

Is your exhaust sitting lower the you put the cutout?