Exhaust With High Flow PSP Downpipes

[overlanderaz]

Just curious, what's the current temps in central CA and how about under hood temps with the new uncoated PSP pipes? I'm in Las vegas and going back and forth between doing coated of uncoated due to under hood temps

I have Fat Cats on order and I was wondering about heat management as well. Im in Phoenix and its hot as hell, which traditionally would make me want to isolate the heat in the down pipe and transfer it to exhaust/tailpipe....keeping engine bay and firewall cooler.

For heat management I considered jet hot coating or similar...or wrapping downpipe and hot side of turbo with those special made blankets and sleeves, such as Funk Motorsports.

However, I have heard of stock cats melting on RHO's...so wondering if I'll cook the cats if I transfer all heat through the turbo and downpipe straight to the cat. I understand the cat on Fat Cat should be better than stock quality and heat resistance, but there is likely a threshold...It would seem unrapped/coated are the best for cats despite bring worse for under hood heat.

Maybe the stock shields are the best balance point, as Fat Cat has mounting for stock upper heat shield. But I would need to know if stock shield would be tight to the downtube (if so may be better to coat or wrap) or if it just shields it with airflow between shield and downpipe (may be best of both worlds). Perfect world would be a heat shield tunnel around downpipe with 1-2" of space for airflow, so the heat is contained but not all forced into the cat....but not sure thats very practical in terms of install.

This is the perils of having downpipes on backorder... too much time to ponder without parts in hand, lol.

 

[Jramos44]

Just curious, what's the current temps in central CA and how about under hood temps with the new uncoated PSP pipes? I'm in Las vegas and going back and forth between doing coated of uncoated due to under hood temps

70-80 degrees here , I don’t know about under hood temps but I’m sure plenty of air flows to cool them down. I was in Vegas for a week with these on and they did fine no issues.

 

[D&Sadventure]

How about PSP down pipes with the newly released Corsa exhaust. Corsa seam to be the only one without the back flutter on shifts.

 

[Jramos44]

How about PSP down pipes with the newly released Corsa exhaust. Corsa seam to be the only one without the back flutter on shifts.

I’d like to try it out but I think they retain the factory front pipes which I don’t have anymore. I’m trying one last configuration tomorrow with this MBRP exhaust. If it doesn’t fix my drone I might be forced weld my stock exhaust back together with some extra resonators.

 

[rpr]

How about PSP down pipes with the newly released Corsa exhaust. Corsa seam to be the only one without the back flutter on shifts.

I don’t think we can conclude that yet on the Corsa. I hope that’s true but there are no videos out yet that confirm that on their final product. Some of their earlier videos from over a year ago do have the gear shift bwaaaps, but not as bad as most others. One person has it installed so far and they’ve only posted an idle video. Corsa did just put a slick 10 second marketing video out but it’s not at all helpful as far as what it sounds like during gear shifts.

For what it’s worth I have no gear shift bwaaaps with the MRT Trail Rated but I’m still searching for a deeper tone.

 

[mghtymous21]

I don’t think we can conclude that yet on the Corsa. I hope that’s true but there are no videos out yet that confirm that on their final product. Some of their earlier videos from over a year ago do have the gear shift bwaaaps, but not as bad as most others. One person has it installed so far and they’ve only posted an idle video. Corsa did just put a slick 10 second marketing video out but it’s not at all helpful as far as what it sounds like during gear shifts.

For what it’s worth I have no gear shift bwaaaps with the MRT Trail Rated but I’m still searching for a deeper tone.

I personally enjoy the wet fart sound on shifts

 

[rpr]

I personally enjoy the wet fart sound on shifts

I get it, if I was younger I probably would as well.

 

[D&Sadventure]

The video clips I heard of the “test mule” had only one minor flutter. Like a half note. Made me unsure as to whether I heard anything. To me it sounded perfect and my only worry is that what they released was several months later. Hopefully they didn’t screw it up with a flutter.

 

[D&Sadventure]

There’s this one one shift, no flutter at all

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[Jramos44]

Updated video of cold start with idle at the end, now have big boz mufflers at the end of the systems. Cold start is a big tamer now but the mufflers got rid of my pops and burbles now, done is still there on the freeway. I don’t know what to do now, maybe I’ll try to put the double h pipe back in and see how what works…

 

[rpr]

Wish I had some words of wisdom for you. Not good to be in so deep and still be unhappy with the results. Resonators and H-pipes?

Hope you figure out a solution, keep us posted.

 

[D&Sadventure]

Didn’t DBallz use stock exhaust with two 12” stainless brothers resonators.

 

[Jramos44]

Wish I had some words of wisdom for you. Not good to be in so deep and still be unhappy with the results. Resonators and H-pipes?

Hope you figure out a solution, keep us posted.

Yeah I can swap the custom pipe I made with a x and resonators for the double h pipe that came from mbrp. Thanks I’ll keep you guys posted.

 

[Jramos44]

Didn’t DBallz use stock exhaust with two 12” stainless brothers resonators.

Not sure what he used or what his set up is I haven’t heard a video and what his thoughts are.

 

[mghtymous21]

Not sure what he used or what his set up is I haven’t heard a video and what his thoughts are.

I'm pretty sure he has some YouTube videos of his and I think a customers. I'm still trying to decide if which pipes to go with

**Edit**
I might be confusing his videos with someone else's. All of this stuff is starting to blend together on me now

 

[Jramos44]

I'm pretty sure he has some YouTube videos of his and I think a customers. I'm still trying to decide if which pipes to go with

**Edit**
I might be confusing his videos with someone else's. All of this stuff is starting to blend together on me now

I think your thinking of the rad down pipes maybe

 

[mghtymous21]

I think your thinking of the rad down pipes maybe

That's very possible

 

[Jramos44]

@DBallz do you have any videos of your current set up and feedback?

 

[Thekingofkings]

The cold start is a lot better. The highway drone would annoying.


What are your other mods and what's your best times on the performance pages?

 

[Jramos44]

The cold start is a lot better. The highway drone would annoying.


What are your other mods and what's your best times on the performance pages?

Performance wise just the downpipes and exhaust, time from the timer in the car is 4.6...

other mods are , catch can, bed cover, side steps, micro splash guards, moriomotto 3rd brake light, baja designs rear light pods and fog light kit, helwig rear sway bar and wheels and tires. still waiting on installing eibach front 1.6 springs