SMSP 2-1/2" Cat Back System Update....Sort Of
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SMSP 2-1/2" Cat Back System Update....Sort Of
OK Guys,
I got a lot of inquiries about my cat back system, but many of you know it is currently sold as a kit or I'll build it on your car at my shop. I do plan to market a bolt on system some time this year but I still don't know an eta. My system will utilize 2-1/2" OD 16g (.065") 304 stainless steel tubing with a resonator and muffler with a conservative tip.
Here is what I propose. I'm willing to have a run of mandrel bent tubing made and I'll sell it as a kit of 3 pieces. The first will have the offset in the B pipe like stock and will be for the section between the cat and the resonator, the second section will be after the resonator and around the gas tank and finally the third section will be the piece going over the axle. All 3 pieces will be made a little longer on each end with the exception of where the B pipe meets the cat and that end will be flared to a 2-1/2" ID. The basic kit will be the 3 sections of tubing, the next option will be adding a Magnaflow resonator and muffler. If the Magnaflow pieces are ordered with the tubing kit you will get a discount on those. I'll also offer all the necessary hangers/flanges/gaskets that may be needed.
This will make building this system much easier then what I've offered before but a few joints will still need to be welded. The tubing will be 2-1/2" OD 18g (.049") 304. I expect this kit to be reasonably priced but pricing will be determined by how many kits I get orders for and I will need a deposit for each tubing kit before I make the order. There is a possibility that the tubing could as be polished for an additional cost.
With these sections built a little longer they could be used on both 2 door and 4 door cars. I expect I could have these ready to ship in 5-6 weeks.
I got a lot of inquiries about my cat back system, but many of you know it is currently sold as a kit or I'll build it on your car at my shop. I do plan to market a bolt on system some time this year but I still don't know an eta. My system will utilize 2-1/2" OD 16g (.065") 304 stainless steel tubing with a resonator and muffler with a conservative tip.
Here is what I propose. I'm willing to have a run of mandrel bent tubing made and I'll sell it as a kit of 3 pieces. The first will have the offset in the B pipe like stock and will be for the section between the cat and the resonator, the second section will be after the resonator and around the gas tank and finally the third section will be the piece going over the axle. All 3 pieces will be made a little longer on each end with the exception of where the B pipe meets the cat and that end will be flared to a 2-1/2" ID. The basic kit will be the 3 sections of tubing, the next option will be adding a Magnaflow resonator and muffler. If the Magnaflow pieces are ordered with the tubing kit you will get a discount on those. I'll also offer all the necessary hangers/flanges/gaskets that may be needed.
This will make building this system much easier then what I've offered before but a few joints will still need to be welded. The tubing will be 2-1/2" OD 18g (.049") 304. I expect this kit to be reasonably priced but pricing will be determined by how many kits I get orders for and I will need a deposit for each tubing kit before I make the order. There is a possibility that the tubing could as be polished for an additional cost.
With these sections built a little longer they could be used on both 2 door and 4 door cars. I expect I could have these ready to ship in 5-6 weeks.
#2
Re: SMSP 2-1/2" Cat Back System Update....Sort Of (SMSP)
Sounds interesting. I think I might have to get the S bend after the resonator and the axle piece.
That's part 2 & 3. I hope pricing works out.
Thanks,
CB
That's part 2 & 3. I hope pricing works out.
Thanks,
CB
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Re: SMSP 2-1/2" Cat Back System Update....Sort Of (SMSP)
is the muffler gonna be anything like the one shown in this thread ?
<A HREF="https://honda-tech.com/zerothread?id=167209
" TARGET="_blank">https://honda-tech.com/zerothread?id=167209
</a>
will the exhaust setup be as quiet as the stock setup?
[Modified by type r 01-1063, 5:26 PM 4/19/2002]
<A HREF="https://honda-tech.com/zerothread?id=167209
" TARGET="_blank">https://honda-tech.com/zerothread?id=167209
</a>
will the exhaust setup be as quiet as the stock setup?
[Modified by type r 01-1063, 5:26 PM 4/19/2002]
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Re: SMSP 2-1/2" Cat Back System Update....Sort Of (type r 01-1063)
is the muffler gonna be anything like the one shown in this thread ?
https://honda-tech.com/zerothread?id=167209
will the exhaust setup be as quiet as the stock setup?
[Modified by type r 01-1063, 5:26 PM 4/19/2002]
https://honda-tech.com/zerothread?id=167209
will the exhaust setup be as quiet as the stock setup?
[Modified by type r 01-1063, 5:26 PM 4/19/2002]
The 2-1/2" tubing combined with those 2 Magnaflow pieces do an excellent job of uncorking the system and still it's quieter then the N1, Tanabe RM and probably some more.
When we tested my ITR header, a test pipe and this cat back system on RStoR's car we actually lost about 2 HP running an open header vs. the full exhaust.
Here's a dyno graph of George Knighton's ITR with a JDM ITR header, 2-1/2" Car Sound cat and my exhaust, plus a CAI..nothing else. George is also one of the elders of the board and is not too crazy about listening to an exhaust that sounds like a lactose intolerant 16 year old who just got finished eating pizza and drinking milk.
182.4 whp/129.5
I should hopefully have a range of pricing in the beginning of the week. But it will be dependent on how many sets are bent.
[Modified by SMSP, 11:26 AM 4/19/2002]
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Re: SMSP 2-1/2" Cat Back System Update....Sort Of (SMSP)
Dave - wait'll you hear my Thermal with no cat when I come by. Don't forget first weekend of May!!
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Re: SMSP 2-1/2" Cat Back System Update....Sort Of (hybridreams)
sounds really good I've been looking for some piping!! Please PM or email me when you have prices available
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Re: SMSP 2-1/2" Cat Back System Update....Sort Of (SMSP)
How thin can you go on the tubing? You mentioned 18g and 16g. Is it worth it for weight savings? We're planning a thinwall 2.5" set-up for my b20vtec civic hatch with the same muffler/resonator combo.
Thanks.
Jeff
Thanks.
Jeff
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Re: SMSP 2-1/2" Cat Back System Update....Sort Of (SMSP)
Sounds good. Depending on price and where I'm at then money wise (my military pay got screwed up) I'm in.
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Re: SMSP 2-1/2" Cat Back System Update....Sort Of (tecnic1)
I would definitely be interested in one towards the end of the summer hopefully.
George Knightons graph really impressed me a while back
George Knightons graph really impressed me a while back
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Re: SMSP 2-1/2" Cat Back System Update....Sort Of (00MRSi)
Dave could you make your system with an "N1 style" muffler? Just curious..
"How thin can you go on the tubing? You mentioned 18g and 16g. Is it worth it for weight savings? We're planning a thinwall 2.5" set-up for my b20vtec civic hatch with the same muffler/resonator combo.
Thanks.
Jeff
_______"
Jeff, 18g is the thinnest for mild or stainless steel (at a reasonable cost), but when I do my system I'll most likely go 16g for durability. 2.50" 18g weighs 1.28lbs/ft and 16g is 1.69 lbs/ft.
[Modified by SMSP, 5:06 AM 4/20/2002]
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Re: SMSP 2-1/2" Cat Back System Update....Sort Of (Jaker)
Will there be a possibility of getting one of these kits for an EF hatchback?
1. I may need to do at least 5 sets of each system. <ost people don't realize what is needed to set the mandrel bender up for each piece and it wouldn't be cost effective to do it for just 1 system.
#20
Re: SMSP 2-1/2" Cat Back System Update....Sort Of (SMSP)
George is also one of the elders of the board and is not too crazy about listening to an exhaust that sounds like a lactose intolerant 16 year old who just got finished eating pizza and drinking milk.
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Re: SMSP 2-1/2" Cat Back System Update....Sort Of (SMSP)
we actually lost about 2 HP running an open header vs. the full exhaust.
so you use full stainless steel for your exhausts? does stainless steel require a special mandrel bender due to its more brittle state or does a mandrel bender for aluminized/mild steel suffice?
[Modified by csufweed, 4:57 AM 4/24/2002]
#23
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Re: SMSP 2-1/2" Cat Back System Update....Sort Of (mindtrix)
I'm pretty sure the kit for a CRX would be very close to the Civic EF kit. All you would need to do is shorten the B pipe slightly (about 6").
#25
Re: SMSP 2-1/2" Cat Back System Update....Sort Of (whtrice01gsr)
Dave, I'll be calling you to set up a time to drop by.
I got a few questions for ya.
Might come down with Victor (97 TYPE-R 312).
Thanks
Cliff
I got a few questions for ya.
Might come down with Victor (97 TYPE-R 312).
Thanks
Cliff
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