headers

[96z28]

What is better long tube or shorty headers? What are some goos brands to look at?

[RyanB58]

I went with Pacesetter Longtubes. Have not put em on yet, but they will make more power than shorties. They are probably much harder to install than shorties. I got a great deal on ebay, headers coated with Y-Pipe shipped to my door for $540. Long Tubes usually have problems passing emissions.
Just my .02

[96z28]

we dont have emissions down here thank god

[Squat13]

Hooker Long tubes are the best buy for a LT setup and can be had w/ or w/o emmisions or o2 sensors.

300th post baby

[Jay 02 TA ws6]

Hooker Long tubes are the best buy for a LT setup and can be had w/ or w/o emmisions or o2 sensors.

300th post baby

How exactly are you going to go without O2 sensors?

[raroZ28]

How exactly are you going to go without O2 sensors?

o2 feedback isn't all that great unless it's a wideband setup. Most computers only make minor adjustments to the afr because of the o2 sensors on factory cars. I heard something about simulators on these cars, to prevent an ses light though.

[Jay 02 TA ws6]

o2 feedback isn't all that great unless it's a wideband setup. Most computers only make minor adjustments to the afr because of the o2 sensors on factory cars. I heard something about simulators on these cars, to prevent an ses light though.

The sims go in place of the O2 sensors post-cat. They basically tell the computer that the cats are functioning... that's why you can put dummy sims in there. You still have the real deal in front of the cats.

I realize widebands provide much more accurate information for A/F ratio... but I can't imagine how an engine would run with absolutely no O2 sensor feedback at all...

[DeWynter]

On a TPI engine with no O2 you just run in open loop forever, Iwould imagine that LT1 and LS1 both have a program adjustment to run if they die, however unlikely that is that two would die at once but Im sure GM programed it for that eventuality. You would of cource throw a code constantly.

[Jay 02 TA ws6]

On a TPI engine with no O2 you just run in open loop forever, Iwould imagine that LT1 and LS1 both have a program adjustment to run if they die, however unlikely that is that two would die at once but Im sure GM programed it for that eventuality. You would of cource throw a code constantly.

Ahhh, yes... that makes sense.

[Formulaboy95]

I am more than happy with the performance of my SLP coated Shorty's. Sure long tubes would be nice, but NJ has tough emissions, potholes that can swallow whole cars.... I only got a few runs with them on, gains - 3+mph, and 3 tenths. I got false knock @ 93mph, and pulled close to 7% of timing, and also was nearly a tenth off on my 60 foot too. So there is some more left to gain. I got my dyno before, so when I go back I will know the exact gains. I am guessing 30-40 hp @ the wheels. Correct me if I am wrong, but I thought 10rwhp is worth about a tenth.

I love the spark plug access now. 1.5hrs to change em. #3 is a pain, especially getting the boot on.

[raroZ28]

How exactly are you going to go without O2 sensors?

Yeah, like I said, even with a good o2, the computer only uses that to make very minor adjustments... I mean, you could have your o2's go bad, and still run your car fine. Gas mileage might suffer a tad, maybe the afr might be off a bit, but that's about it. I am going with a stand alone setup that eliminates the o2.

[fastTa]

Yeah, like I said, even with a good o2, the computer only uses that to make very minor adjustments... I mean, you could have your o2's go bad, and still run your car fine. Gas mileage might suffer a tad, maybe the afr might be off a bit, but that's about it. I am going with a stand alone setup that eliminates the o2.

I do hope you are seriously kidding.

[raroZ28]

I do hope you are seriously kidding.

No, depending on the ECU, you can run without o2 feedback. It's been done and proven. I am putting a 4 injector conversion to replace the stock 2 injector tb on my conquest, and the software that controls it has an option for o2, but isn't necessary. For a daily driver, I'm not sure. But again, no, I am not joking. I'm not sure what they're car is running, but I believe it's upwards of 600 hp. No o2 feedback.

[raroZ28]

WHO WANTS SOME???



No o2 feedback on that bad boy.

[fastTa]

Everyone assumed you meant running your z-28 without the "pre-cat" o2 sensors since this is a f-body forum afterall. And no-one said it couldn't be done either, but given your mods on your z-28 it didn't seem beneficial to you in any way to eliminate the LTFT capabilities based on closed loop feedback.