Jdl turbo kit question

[Brzxton]

I’m looking to get the jdl turbo kit and was wondering what the pluses and negatives are to getting the recirculated wastegate. Thanks! Btw I will probably have a Jackson Racing SC w/ an oil cooler for sale in a little��

Edit- nvm it I found out it makes it quieter.

[grichardt]

It will be quieter with the recirc tube, and louder with the open dump

[Amputechture]

Recirculated is much much much much much much much much more quiet. I have an open dump and seriously sounds like a chainsaw. The more boost you run, the less exhaust it dumps so it's a bit more audibly pleasing on my 11 PSI map, but it's still seriously obnoxious. Even when I had the factory catback, I was the loudest motherfucker on the road by a country mile whenever I went into boost. Harleys look over at me with 'what the fuck' looks on their face.

[Alltezza]

Recirc is quieter but you suffer just a little bit of power loss and HP loss.
I don't know how much you lose but I don't think it'll be much since you're gaining power just from a turbo alone.

Open dump you dont have any of those issues and it's cheaper since you don't have to pay extra to JDL for it but...it's loud af and I guess not environmentally friendly

[ShadowReaper]

Originally Posted by Alltezza

Recirc is quieter but you suffer just a little bit of power loss and HP loss.
I don't know how much you lose but I don't think it'll be much since you're gaining power just from a turbo alone.

Open dump you dont have any of those issues and it's cheaper since you don't have to pay extra to JDL for it but...it's loud af and I guess not environmentally friendly

....is this real life?

[Alltezza]

Originally Posted by ShadowReaper

....is this real life?

Do you not lose a bit of power? Or are you just giving me a hard time about my statement lol

I guess by bit I mean like very little

[ShadowReaper]

Originally Posted by Alltezza

Do you not lose a bit of power? Or are you just giving me a hard time about my statement lol

I guess by bit I mean like very little

haha no. I have been researching turbo kits for a while and I just never heard of this. Is it proven?

and you said POWER LOSS and HP loss ???

[Alltezza]

Originally Posted by ShadowReaper

haha no. I have been researching turbo kits for a while and I just never heard of this. Is it proven?

and you said POWER LOSS and HP loss ???

LOL sometimes you just think too fast and type shit.....

But I'm not sure, I have open dump.

I saw somewhere on the JDL facebook group saying the something about losing a little bit of power and response with a recirc.

I got curious and Google'd Open dump vs recirc and this link came up on a supra forum. Someone also said something about a slight loss.


http://www.supraforums.com/forum/sho...ated-Wastegate

[ShadowReaper]

Originally Posted by Alltezza

LOL sometimes you just think too fast and type shit.....

But I'm not sure, I have open dump.

I saw somewhere on the JDL facebook group saying the something about losing a little bit of power and response with a recirc.

I got curious and Google'd Open dump vs recirc and this link came up on a supra forum. Someone also said something about a slight loss.


http://www.supraforums.com/forum/sho...ated-Wastegate

hmm interesting.. I personally think.....all that power... whats a few HPs, when I got so many stickers to +5s every where

Doesn't the wastegate take away from the turbo sound tho?

[mrg666]

When throttle is open on power demand, valve closes and directs boost to intake manifold. So it doesn't matter whether the valve would dump or recirculate since throttle is open and valve is closed. If the throttle is closed, valve opens meaning that power demand is low, i.e. engine is either idling or working at low rpm. Again, it doesn't matter whether the valve is dumping or recirculating the boost when the valve is open in no power demand. Why do you guys believe recirculation decreases the power? It doesn't make sense.

[austin_ellas]

Originally Posted by mrg666

When throttle is open on power demand, valve closes and directs boost to intake manifold. So it doesn't matter whether the valve would dump or recirculate since throttle is open and valve is closed. If the throttle is closed, valve opens meaning that power demand is low, i.e. engine is either idling or working at low rpm. Again, it doesn't matter whether the valve is dumping or recirculating the boost when the valve is open in no power demand. Why do you guys believe recirculation decreases the power? It doesn't make sense.

My guess would be that people think it will cause more back pressure in the exhaust thus making the turbo less efficient, and in turn cause them to lose HP.

[Bookies]

Originally Posted by mrg666

When throttle is open on power demand, valve closes and directs boost to intake manifold. So it doesn't matter whether the valve would dump or recirculate since throttle is open and valve is closed. If the throttle is closed, valve opens meaning that power demand is low, i.e. engine is either idling or working at low rpm. Again, it doesn't matter whether the valve is dumping or recirculating the boost when the valve is open in no power demand. Why do you guys believe recirculation decreases the power? It doesn't make sense.

Correct me if I'm wrong but I think you have the idea of how a wastegate works backwards. If your wastegate isn't opening under whatever your desired boost pressure is then you are going to have problems, especially during WOT/power demand..

Now if we think about recirculated vs open dump as far as power, does it not make sense that you'd get slightly more power out of an open dump? I mean you would have more back pressure with the recirc and slightly more choked up exhaust as a result. I'm not expert on this stuff and I've only ran open dump on my BRZ so please teach me if I'm not thinking about this correctly.

[Detroiter]

Originally Posted by mrg666

When throttle is open on power demand, valve closes and directs boost to intake manifold. So it doesn't matter whether the valve would dump or recirculate since throttle is open and valve is closed. If the throttle is closed, valve opens meaning that power demand is low, i.e. engine is either idling or working at low rpm. Again, it doesn't matter whether the valve is dumping or recirculating the boost when the valve is open in no power demand. Why do you guys believe recirculation decreases the power? It doesn't make sense.

You are thinking of a diverter valve and BOV. Those are not wastegates. The wastegate is what dumps exhaust gases around the turbine to keep boost at the requested level. It has nothing to do with the intake.

[mrg666]

Originally Posted by Detroiter

You are thinking of a diverter valve and BOV. Those are not wastegates. The wastegate is what dumps exhaust gases around the turbine to keep boost at the requested level. It has nothing to do with the intake.

Thank you for the correction. I thought the thread was about BOV. Sorry for interruption.