are there any headers don't require ecu reflash?
02-29-2012, 08:58 PM
#21
Drifting
02-29-2012, 09:01 PM
#23
Drifting
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Any header worth installing (ARH is my preference) will eventually need tuning. I have seen some people go a while without a code coming up, but eventually the always do. (again from what I have seen many times)
If your that concerned about warranty claims I can offer two options for you. You can purchase a new ECM and we can program it for your vin and mods, or we can send you a Trinity hand held that will retain your stock file, and also have a performance tune for your mods that leaves zero "water mark" in the ECM that it was ever tuned. It cannot be detected by others that anyone was ever in there without analyzing the files itself and GM does not do that, they look for segment counts only (the sum of what your tune adds up to in the ECM)
We also have the headers in stock too, so we can give you a package deal if you like, hope that helps.
If your that concerned about warranty claims I can offer two options for you. You can purchase a new ECM and we can program it for your vin and mods, or we can send you a Trinity hand held that will retain your stock file, and also have a performance tune for your mods that leaves zero "water mark" in the ECM that it was ever tuned. It cannot be detected by others that anyone was ever in there without analyzing the files itself and GM does not do that, they look for segment counts only (the sum of what your tune adds up to in the ECM)
We also have the headers in stock too, so we can give you a package deal if you like, hope that helps.
02-29-2012, 09:16 PM
#24
Drifting
I am still trying to figure this all out, does all tunes turn off back o2 sensors. Is there any advantage of hooking up all the o2 sensors if not why do they build them with the back o2 holes. If you do back 02 how long extensions. I was thinking going obx without cats. May have to go without a tune for a while.
02-29-2012, 09:19 PM
#25
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St. Jude Donor '10-'11-'12
you guys would crap your pants if you knew what those cost and the profit margin.. I looked into having a few things made "over-seas".. Now I know why people do it .. LOL
02-29-2012, 09:21 PM
#26
Tech Contributor
I have read that if you install spark plug non-foulers on your rear o2 sensors they will not throw the code even with the stock tune.
Search for the posts here or Google them, it appears to work and costs next to nothing.
Search for the posts here or Google them, it appears to work and costs next to nothing.
02-29-2012, 09:32 PM
#27
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OF course theres a profit margin...I have non issue with someone making money on a FAIR priced item.
If I had the capital to invest in 100,000 sets at a time Id hope to make a profit as well...however this is not the point of this thread.
03-01-2012, 08:50 AM
#28
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But it's cheap garbage, would you really want that on your Corvette? Wouldn't be on my car thats for sure.
03-01-2012, 08:58 AM
#29
Le Mans Master
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St. Jude Donor '11-'12-'13-'14
IF I had bottomless pockets and cared about a brand name, I would be glad to fork over $1500 for headers. But, being that they all make within 2% or less of the same power and torque, fit just as good and look just as good, I'd rather spend my mod money on other parts to go fast.
Just my $.02 though
03-01-2012, 09:05 AM
#30
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St. Jude Donor '11-'12-'13-'14
I am still trying to figure this all out, does all tunes turn off back o2 sensors. Is there any advantage of hooking up all the o2 sensors if not why do they build them with the back o2 holes. If you do back 02 how long extensions. I was thinking going obx without cats. May have to go without a tune for a while.
1) It gives peace of mind to those people who want to keep their rear 02s plugged in the exhaust.
2) Serves as a place to install a wideband 02 sensor.
The only point of the rear 02s from the factory is to monitor catalytic efficiency. The computer expects to receive different voltage(readings) from the rear 02s than it does from the front 02s as an indication that the catalystic converters are in fact working.
Obviously if you remove the cats, the reading from the front and rear 02s would be the same and thus a code for Catalytic inefficiency would illuminate the CEL. This does not cause any performance reduction and is merely informational.
I drove around for months with my rear 02s active and plugged in with a CEL and went to the dyno and made 421/398 before swapping the cam and finally having it tuned.
If you can deal with a CEL until you're ready for a tune, then I'd say go for it. It won't hurt anything and when you add more mods/want more in the future, you can always have the rear 02s turned off.
03-10-2012, 09:02 AM
#31
Drifting
The point of the rear 02 bungs in aftermarket x-pipes is 2-fold.
1) It gives peace of mind to those people who want to keep their rear 02s plugged in the exhaust.
2) Serves as a place to install a wideband 02 sensor.
The only point of the rear 02s from the factory is to monitor catalytic efficiency. The computer expects to receive different voltage(readings) from the rear 02s than it does from the front 02s as an indication that the catalystic converters are in fact working.
Obviously if you remove the cats, the reading from the front and rear 02s would be the same and thus a code for Catalytic inefficiency would illuminate the CEL. This does not cause any performance reduction and is merely informational.
I drove around for months with my rear 02s active and plugged in with a CEL and went to the dyno and made 421/398 before swapping the cam and finally having it tuned.
If you can deal with a CEL until you're ready for a tune, then I'd say go for it. It won't hurt anything and when you add more mods/want more in the future, you can always have the rear 02s turned off.
1) It gives peace of mind to those people who want to keep their rear 02s plugged in the exhaust.
2) Serves as a place to install a wideband 02 sensor.
The only point of the rear 02s from the factory is to monitor catalytic efficiency. The computer expects to receive different voltage(readings) from the rear 02s than it does from the front 02s as an indication that the catalystic converters are in fact working.
Obviously if you remove the cats, the reading from the front and rear 02s would be the same and thus a code for Catalytic inefficiency would illuminate the CEL. This does not cause any performance reduction and is merely informational.
I drove around for months with my rear 02s active and plugged in with a CEL and went to the dyno and made 421/398 before swapping the cam and finally having it tuned.
If you can deal with a CEL until you're ready for a tune, then I'd say go for it. It won't hurt anything and when you add more mods/want more in the future, you can always have the rear 02s turned off.
03-13-2012, 10:23 PM
#33
Drifting
Just finished up a set of obx headers. Yes I would have liked to buy american but here is is my conclusion. The headers are 80-90% of american and at $645 delivered to my door they are approximately a third of the price.
Pluged off back o2 with 18m oil pan bolt, no cats
Drilled Holes to tie up 02 wires.
Pluged off back o2 with 18m oil pan bolt, no cats
Drilled Holes to tie up 02 wires.
