New Downpipe on the Market.

[JDM BLKBMW]

I just found a place selling some nice looking downpipes. They have a catless and a catted version. Supposed to throw no CEL with the catted version. "No Guarantee" though. The place is H&R Performance. (not associated with H&R Springs).

It is a piece of art, and is very nice. The catted one I received was as nice as any exhaust piece I have ever seen other than a titanium Greddy Exhaust I bought many years ago.

The welds are nice, no burs, and a nice 200 cell high flow race cat. The bracket is attached and it laser cut with nice welds. High quality CNC inlet flange, and 4.5” diameter. I will be installing this beauty this weekend, with a new downpipe gasket to ensure no leaks. Hopefully it fits like a glove, like they assure me it will.

The catted downpipe is on their website for $519 shipped, and seems to me like the best catted downpipe value out there. I will hopefully report success on the install tomorrow or Sunday.

Here is the link to the downpipe I got:

https://handrperformance.com/collec...toyota-gr-supra-4-5-high-flow-catted-downpipe

Here is the link to the catless downpipe:

https://handrperformance.com/collec...ta-gr-supra-4-5-catless-downpipe-for-b58-3-0l

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[SupraNando]

Looks Great, looking forward to your update

 

[VA90]

Wow, at $519, the catted version of their downpipe is $400+ cheaper than everything else I’ve seen on the market, including AA, ETS, etc.

 

[PalmettoPrecision]

I just found a place selling some nice looking downpipes. They have a catless and a catted version. Supposed to throw no CEL with the catted version. "No Guarantee" though. The place is H&R Performance. (not associated with H&R Springs).

It is a piece of art, and is very nice. The catted one I received was as nice as any exhaust piece I have ever seen other than a titanium Greddy Exhaust I bought many years ago.

The welds are nice, no burs, and a nice 200 cell high flow race cat. The bracket is attached and it laser cut with nice welds. High quality CNC inlet flange, and 4.5” diameter. I will be installing this beauty this weekend, with a new downpipe gasket to ensure no leaks. Hopefully it fits like a glove, like they assure me it will.

The catted downpipe is on their website for $519 shipped, and seems to me like the best catted downpipe value out there. I will hopefully report success on the install tomorrow or Sunday.

Here is the link to the downpipe I got:

https://handrperformance.com/collec...toyota-gr-supra-4-5-high-flow-catted-downpipe

Here is the link to the catless downpipe:

https://handrperformance.com/collec...ta-gr-supra-4-5-catless-downpipe-for-b58-3-0l

Tagged for updates.

 

[JDM BLKBMW]

So. We got it installed last night. Fitment was very good. There are adjustment slots in the bracket that allow for adjustment. We had a hard time getting the downpipe and turbine outlet flanges aligned perfectly. Due to OCD issues, that took much longer than it should have. Everything lined up perfectly when done. V band tightened down, and outlet clamp torqued. Fired it up, NO leaks. All good. Very impressed. Not too loud with stock exhaust. Slight smell difference with the high flow cat. No CEL so far.

Running HKS drop in, and Racechip GTS Black on setting 5. That's the only other mods. Pulls very strong. Traction is an issue. ?

Highly recommend this downpipe.

 

[Extreme Power House]

Please note, per their website, you need a tune for the CEL. I would not compare it to the active autowerke. Its more comparable to the CTS Turbo catted which is cheaper

 

[JDM BLKBMW]

Yes. You are correct. The AA downpipe has a 300cell GESI Cat. The one on the H&R that I got is a 200 Cell High flow race cat. The GESI cats because they are EPA certified, are more than likely more costly, and the higher cell count as well. The quality of this downpipe's construction appears to be as high as anything I have seen. The diameters on this downpipe are keep as big as possible, and the reductions are long, smooth transitions. For example the flex section inlet and outlet are bigger than most otherwise you wouldnt see the significant size down to connect back to the factory catback.

I had a long discussion with the shop owner at H&R about the CEL question. They say you "Should not" get a CEL with the catted version. But they do not guarantee it, because there are too many variables (other mods, etc). That is why the note that suggests a tune. It has been noted that even with guaranteed no CEL downpipes, people have on occasion had CEL's. Although, there are others that have no CEL on 200 Cell cats.

I feel better that I have a cat on mine. Didnt want to be CatLess. Even thought I am a "Dog Person".

 

[JRedMKV]

Yes. You are correct. The AA downpipe has a 300cell GESI Cat. The one on the H&R that I got is a 200 Cell High flow race cat. The GESI cats because they are EPA certified, are more than likely more costly, and the higher cell count as well. The quality of this downpipe's construction appears to be as high as anything I have seen. The diameters on this downpipe are keep as big as possible, and the reductions are long, smooth transitions. For example the flex section inlet and outlet are bigger than most otherwise you wouldnt see the significant size down to connect back to the factory catback.

I had a long discussion with the shop owner at H&R about the CEL question. They say you "Should not" get a CEL with the catted version. But they do not guarantee it, because there are too many variables (other mods, etc). That is why the note that suggests a tune. It has been noted that even with guaranteed no CEL downpipes, people have on occasion had CEL's. Although, there are others that have no CEL on 200 Cell cats.

I feel better that I have a cat on mine. Didnt want to be CatLess. Even thought I am a "Dog Person".

Any further updates on this downpipe? Have you had to deal with any CELs?? I saw this on eBay a while back but didn't pull the trigger because they didn't have a no CEL guarantee. The workmanship looks amazing from your pics.

 

[JDM BLKBMW]

Unfortunately. The CEL has come on. The 200 cell cat is not enough to keep the P0420 code at Bay. I am trying an old school Dorman 42002 spark plug anti fouler tomorrow to see if it will help enough to keep it away. Car runs great, sounds great. I have a sound clip but this sight won't let me post an MP4 file.

 

[JRedMKV]

Unfortunately. The CEL has come on. The 200 cell cat is not enough to keep the P0420 code at Bay. I am trying an old school Dorman 42002 spark plug anti fouler tomorrow to see if it will help enough to keep it away. Car runs great, sounds great. I have a sound clip but this sight won't let me post an MP4 file.

Thanks for letting us know. I actually contacted them if they have this downpipe in stock but it’s out at the moment. They did tell me that they might be changing to a 300 cell cat so I’ll probably wait for that.

 

[JDM BLKBMW]

So as of right now I have driven 100+ miles and 6 or 8 drive cycles and have not gotten a CEL. I modified a Dorman 42002 spark plug anti fouler and installed between the O2 and the o2 bung on the downpipe.. Before the anti fouler spacer it would take 2 drive cycles and it was like clockwork the P0420 would come up.

I don't know if it's fixed, but it is for sure better.

 

[SupraCal]

how far is a drive cycle?

 

[Andrew4Supra]

Has anyone heard of this particular catted DP. Pros and Cons...

https://www.logosengineeringmotorworks.com/m340i-g20-supra-2020-z4-g29

 

[Extreme Power House]

Has anyone heard of this particular catted DP. Pros and Cons...

https://www.logosengineeringmotorworks.com/m340i-g20-supra-2020-z4-g29

not familiar with them but I'm more interested in the cat they use. I don't see a brand mentioned which makes me think it's a generic one, in this case, the downpipe would be overpriced.

If they use one of the more reputable cats (GESI, HJS), this downpipe at the current price would be a lot more interesting.

 

[JDM BLKBMW]

I have driven about 300 miles now. Many drive cycles. Drive cycle for me are 10-23 miles typically. Alot of cruising, some WOT blast also. No sign of the CEL. I believe it's fixed. So for the price plus $6 O2 fouler from Autozone, im very happy. Sounds perfect.

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