baseballd2
Member
- :
- mazdaspeed6
Does the catted downpipe from cpe provide much less performance than the cattless. I don't want a cel and Im not too sure about preforming the diode trick.
They did a lot of testing on which cat to use and the end result was a high flow cat. I would imaigine the HP loss would be 5 or less. I am going with the catted version this spring.baseballd2 said:Does the catted downpipe from cpe provide much less performance than the cattless. I don't want a cel and Im not too sure about preforming the diode trick.
baseballd2 said:do you think it would be bad if I put in the cpe downpipe and later installed the catback magnaflow exhaust. Its 3'' into 2.5 right? or will that be ok. I dont like the cpe 1 pipe exhaust
mustangman said:Hey CPE, I asked this on another post, but correct me if I'm wrong. A catless downpipe will still pass emissions because the Speed6 has two cats. I dealt with Park Mazda in Wooster (They sell all your stuff and I as impressed with them) and in talking with them they were of the same mind.
Is this right???
mustangman said:Hey CPE, I asked this on another post, but correct me if I'm wrong. A catless downpipe will still pass emissions because the Speed6 has two cats. I dealt with Park Mazda in Wooster (They sell all your stuff and I as impressed with them) and in talking with them they were of the same mind.
Is this right???
Afroman said:This sounds about right. The first cat in your Down-Pipe is the "pre-cat or warm up cat". This is in place so that untill the Main Cat ( which is located beneath the car) warms up so your car isnt poluting the air.
In order for the cats to work properly, they need to be at a higher temperature. The Downpipe cat get hot very quick since its right at the beginning of the exhaust. This buys time for the main cat to warm up to operating temperature. The main cat takes longer becasue the exhaust gas temperatures in its location are cooler.
So I would assume the trick would be to make sure your car completely warmed up and that main cat is completely warmed up BEFORE you go test for emessions. This way it is at operating temperature for the emissions test.
mustangman said:Hey CPE, I asked this on another post, but correct me if I'm wrong. A catless downpipe will still pass emissions because the Speed6 has two cats. I dealt with Park Mazda in Wooster (They sell all your stuff and I as impressed with them) and in talking with them they were of the same mind.
Is this right???
www.cp-e.com said:Unfortunately our catless downpipe will replace both cats so it will not pass emissions. However, some states only require a OBD-II scan to search for emissions related CEL's. We're coming out with an oxygen sensor simulator which will eliminate any emissions related CELs. So as long as the tech doesn't do a visual inspection for a cat, one could hypothetically pass the emissions test with just an oxygen sensor eliminator.
Our oxygen sensor eliminator is called a Smart O2 Sim. It's smart because its programmable for use on ANY car. We should have these available in the very near future.
But if you're looking to pass your states emissions test, I'd only recommend using the catted downpipe.
Jordan
jdub260 said:Do we have an approx. $$ amount for the "Smart O2 Sim"? Also will this be cheaper with a DP and Smart O2 Sim package??
Inquiring minds want to know.![]()
mustangman said:Jordan, Afroman, and everyone else, thank you for the quick responces.
I just want to clarify. Monday I am getting your turbo back DP w/cat and exhaust installed. I live in Ohio and I just searched for quite a bit looking for "what is tested"... I can't find what exactly they do. But, if I buy the turbo back system (DP w/cat and exhaust) I will pass emissions. Correct?
Sorry to be so conservative, but after spending this kind of money, I want to be sure I'll be ok for a few years. Thank you again everyone.
A quick side note, CPE, you would make me VERY happy if you also sold a plastic part that smoothed out the exhaust port that isn't being used with your system. Or help me find a new bumper for my MS6... (lol)
Jim