Bonez Cat Installation/Split Air Pipe
#1
Bonez Cat Installation/Split Air Pipe
So I installed my Bonez HF Cat over the weekend. No problems with bolts/nuts!
Anyway, I ended up cutting the flange off of the split air pipe and used fuel line to attach it to the cat. Is that what everyone else has done? Any problems with melting the hose due to the heat of the cat?
Anyway, I ended up cutting the flange off of the split air pipe and used fuel line to attach it to the cat. Is that what everyone else has done? Any problems with melting the hose due to the heat of the cat?
#2
The Anti-Prius
iTrader: (9)
Originally Posted by cblake3
So I installed my Bonez HF Cat over the weekend. No problems with bolts/nuts!
Anyway, I ended up cutting the flange off of the split air pipe and used fuel line to attach it to the cat. Is that what everyone else has done?
Anyway, I ended up cutting the flange off of the split air pipe and used fuel line to attach it to the cat. Is that what everyone else has done?
No,
I cut the tube off my old Cat & welded it on the new Cat.
Last edited by Sled Driver; 03-27-07 at 11:48 AM. Reason: Included Quote
#6
Rotary Enthusiast
I just got my Bonez cat but haven't installed it yet. It came with a metal tube and a piece of hose to connect it to the cat. I was told this was all that was needed to install the unit and was a complete bolt up job using the factory flange. anyone else having problems? would like info before starting the job.
Thanks
Jeff
Thanks
Jeff
#7
Senior Member
iTrader: (28)
since were on subjucts on hi flows
I'm thinking of getting one also. My mods are dp, cat back and apexi ecu. Also i do have the newer pfc so that means my base map can handle these mods intake, intercooler, dp, hi flow, and cat back. anyone dissagree or should i just go with it and get the hi flow cat? I will get it tune but for now i want just to have the base map and modifications above.
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#8
Brings Order to Chaos
iTrader: (18)
I bought a kit from another forum member. Stock they come with a metal tube coming from the cat (as jeff_p mentions).
I also cut the split air pipe line (which includes a check valve) and used a piece of hose between it and the cat. Have had no problems with cracking/melting due to heat.
I also cut the split air pipe line (which includes a check valve) and used a piece of hose between it and the cat. Have had no problems with cracking/melting due to heat.
#9
Rotary Enthusiast
mine is in the shop right now getting a 2000 degree grey ice coating applied. my entire exhaust will be coated in this after putting on the cat. should look real nice under the car I'll post pixs when done
Jeff
Jeff
#10
Originally Posted by jeff p
I just got my Bonez cat but haven't installed it yet. It came with a metal tube and a piece of hose to connect it to the cat. I was told this was all that was needed to install the unit and was a complete bolt up job using the factory flange. anyone else having problems? would like info before starting the job.
Thanks
Jeff
Thanks
Jeff
Since I don't weld, I chose the 1st option.
#11
Originally Posted by technomentor
I bought a kit from another forum member. Stock they come with a metal tube coming from the cat (as jeff_p mentions).
I also cut the split air pipe line (which includes a check valve) and used a piece of hose between it and the cat. Have had no problems with cracking/melting due to heat.
I also cut the split air pipe line (which includes a check valve) and used a piece of hose between it and the cat. Have had no problems with cracking/melting due to heat.
#12
Originally Posted by mdpalmer
Yes, there is a flange that mates up with the end of the split air pipe from the air pump. You can see it in the service manual...
#14
T O R Q U E!
iTrader: (24)
Originally Posted by dlarson101
If this is missing... Could it cause my car to fail smog?
#15
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Sorry for 'stealing' the thread but if you have no cat, can you just plug the air pump hole, where the split air pipe attaches? or should I just remove the air pump all together?
#16
NASA TTS Build
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Originally Posted by ghost-rider
Sorry for 'stealing' the thread but if you have no cat, can you just plug the air pump hole, where the split air pipe attaches? or should I just remove the air pump all together?
#17
Originally Posted by mdpalmer
The only thing about the flange is that there is a one-way check valve that prevents exhaust gases from going back to the air pump. If that thing doesn't work... your air pump will be fighting the backpressure from the exhaust gases in the cat converter... you know?
Looks like I know what my next project is..
#18
Recovering Miataholic
Originally Posted by ghost-rider
Sorry for 'stealing' the thread but if you have no cat, can you just plug the air pump hole, where the split air pipe attaches? or should I just remove the air pump all together?
Sorry for 'stealing' the thread but if you have no cat, can you just plug the air pump hole, where the split air pipe attaches? or should I just remove the air pump all together?
Get rid of it since its not doing anything.
FWIW, my '94 FD failed tailpipe testing in CA in 2002 with the stock converter. After replacing plugs, wires, oil, making sure the engine was really hot, etc, it failed again. So I bought a new Bonez converter. With the normal air injection and the new cat converter, the car failed worse than before! Eventually I had to buy an OEM converter, which passed with loads of margin. The car has also passed the 2004 and 2006 emissions tests with plenty of margin. My speculation is that the air injection into the Bonez is not handled correctly internally. The air needs to be distributed throughout the converter to burn the most HCs possible. I think the OEM cat is probably designed better for that, IMHO.
Last edited by wstrohm; 03-29-07 at 01:11 PM.
#19
Hey I know this is raising something from the dead, but I tried this and the silicone tubing got greasy/melted and fell off the catalytic converter end. I'd recommend welding it for anyone else planning on buying this.
#20
Recovering Miataholic
Deleted. See post #18 above. BTW, our car still passes CA smog (as of 2018 test) with the OEM cat installed in 2002.
Last edited by wstrohm; 10-29-19 at 01:35 PM. Reason: Redundant post 12 years later! Sorry.
#21
Lousy Crew Chief
iTrader: (10)
Gmanpie,
I had this SAME issue twice with the Bonez cat. I lost my air tube twice at the track. I called Ari and he was SUPER helpful and sent me a new kit but we had the tube bead rolled on both ends. With the bead rolled tube, I didn’t lose the tube at the track and it’s held on MUCH better.
Ari is great with feedback. Call or send him an email. He’ll help you out.
Matt
I had this SAME issue twice with the Bonez cat. I lost my air tube twice at the track. I called Ari and he was SUPER helpful and sent me a new kit but we had the tube bead rolled on both ends. With the bead rolled tube, I didn’t lose the tube at the track and it’s held on MUCH better.
Ari is great with feedback. Call or send him an email. He’ll help you out.
Matt
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