| Author |
Message |
TOM BUCKLEY (Tom_b)
Junior Member
Username: Tom_b
Post Number: 57
Registered: 6-2003
| | Posted on Sunday, September 07, 2003 - 4:30 pm: | |
Ken,
LOL. I'd really appreciate that.
Tom
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Ken Sullender (Sulley)
New member
Username: Sulley
Post Number: 11
Registered: 9-2003
| | Posted on Sunday, September 07, 2003 - 2:51 pm: | |
Tom, if I see anyone running Florida around with towels on their heads holding Ferrari cats I'll give you a call and report 'em! |
jeff ryerson (Atheyg)
Member
Username: Atheyg
Post Number: 442
Registered: 8-2002
| | Posted on Sunday, September 07, 2003 - 12:18 pm: | |
Its important the by pass pipe has the O2 bung otherwise the car will run rich and you will get a strong exhaust smell |
dave handa (Davehanda)
Intermediate Member
Username: Davehanda
Post Number: 1786
Registered: 5-2001
| | Posted on Sunday, September 07, 2003 - 10:42 am: | |
I removed the cats on my 78 308 GTS and the exhaust note was louder, and it stunk... |
Dr Tommy Cosgrove (Vwalfa4re)
Intermediate Member
Username: Vwalfa4re
Post Number: 1278
Registered: 5-2001
| | Posted on Sunday, September 07, 2003 - 9:57 am: | |
I took the cats off myself. I had the car 2 years before I did it and it did not have that same exhaust smell when they were on. |
TOM BUCKLEY (Tom_b)
Junior Member
Username: Tom_b
Post Number: 56
Registered: 6-2003
| | Posted on Sunday, September 07, 2003 - 5:27 am: | |
Ken,
I have an 88 Mondial without the cat. There is a 10 HP difference from Euro (no cat) to U.S. (with cat). Assuming differences in ECU programming, cam, etc. , i'm assuming I gained about 5 HP. Not enough to feel but she has a louder and nicer exhaust note. I've also got that unburned gas smell but not in the car. I have to stand behind to notice it.
Oh yeah. In case the EPA is monitoring this list, I didn't remove the cat. It was stolen by terrorists in need of platinum for some upcoming dastardly deed. I will not rest until I track them down and get my cat back !
Tom |
Kenneth Sullender (Sulley)
New member
Username: Sulley
Post Number: 8
Registered: 9-2003
| | Posted on Saturday, September 06, 2003 - 8:36 pm: | |
Tommy, did you remove the cats or were they already off? If you removed them, did you notice the same smell when you had them on the car?
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Dr Tommy Cosgrove (Vwalfa4re)
Intermediate Member
Username: Vwalfa4re
Post Number: 1276
Registered: 5-2001
| | Posted on Friday, September 05, 2003 - 7:45 am: | |
Mine has no cats and I get that strong smell too. It does it all the time even after I have adjusted the CO. Aside from the occasional fireball from the Tubi on the track the car runs fine. I have been running this setup since 1999. (On long highway trips I am getting about 18 mpg) |
jeff ryerson (Atheyg)
Member
Username: Atheyg
Post Number: 434
Registered: 8-2002
| | Posted on Thursday, September 04, 2003 - 9:29 pm: | |
No,
If your car is running properly (not rich or missing)you shouldn't have any smell. |
Kenneth Sullender (Sulley)
New member
Username: Sulley
Post Number: 4
Registered: 9-2003
| | Posted on Thursday, September 04, 2003 - 9:22 pm: | |
Jeff, can you smell the unburnt gas? |
jeff ryerson (Atheyg)
Member
Username: Atheyg
Post Number: 433
Registered: 8-2002
| | Posted on Thursday, September 04, 2003 - 9:17 pm: | |
I put a factory test pipe on my 328, it seems to rev easier and faster at low rpms, its also a bit louder but I like it. Depending on your model some have 2 cats some 1 like mine you should get a few more HP maybe 3-5.
The biggest reason I did mine was the safety factor in case you have a intermittent bank go out it reduces the risk of fire the performance increase was a bonus |
Doug meredith (Dougm)
Member
Username: Dougm
Post Number: 361
Registered: 2-2001
| | Posted on Thursday, September 04, 2003 - 7:29 pm: | |
I had test pipes on a previous '84 308QV with stock exhaust. HAd dynos done 1 week apart on the same dyno with and without cats. The curves of the dyno were identical and the peak hp/ft.lbs were both under 1% increase. The car had more "reasonance" in the cabin without and at stoplights I could smell the unburnt gas. |
dave handa (Davehanda)
Intermediate Member
Username: Davehanda
Post Number: 1775
Registered: 5-2001
| | Posted on Thursday, September 04, 2003 - 5:07 pm: | |
It WILL be a bit louder, and you may gain a few hp...but without a dyno test before and after, it is purely speculation. |
Ali Haas (Aehaas)
Junior Member
Username: Aehaas
Post Number: 96
Registered: 5-2003
| | Posted on Thursday, September 04, 2003 - 4:57 pm: | |
It is possible to actually lose horsepower when making changes to the exhaust system from OEM.
aehaas |
Byron (Bmyth)
Intermediate Member
Username: Bmyth
Post Number: 1223
Registered: 10-2002
| | Posted on Thursday, September 04, 2003 - 4:41 pm: | |
It varies from car to car, Kenneth. The best way is to get your hands on a set of test pipes and run your car on a dyno. |
Kenneth Sullender (Sulley)
New member
Username: Sulley
Post Number: 2
Registered: 9-2003
| | Posted on Thursday, September 04, 2003 - 4:23 pm: | |
I have an 85 Euro QV and we don't have emissions testing any longer. I was going to remove my system and replace with one without the cats. Any idea on the gain in HP??
Thanks |