[Z06] 2003 vs. 2004 Z06 Difference?
05-25-2005, 05:33 PM
#21
Melting Slicks
Member Since: Apr 1999
Location: New Lebanon.Ohio
Posts: 2,988
Likes: 0
Received 22 Likes
on
20 Posts
Cruise-In I Veteran
Cruise-In II Veteran
Cruise-In III Veteran
Cruise-In IV Veteran
Originally Posted by AFVETTE
The shocks were the biggest change. I installed them on my 03, there is a difference.
It's hard to prove but owner reports seem to indicate the 04's are a little stronger. It appears some of the fat that GM built into the LSX series of motors was taken out yielding slightly more HP. Many 04 owner's report getting "lean" codes when they install any low restriction intake like Blackwing etc. Where as, on almost every other LSX motor even after installing an intake the AFR's are still rich. If I had to guess this factory tweaking (if true) may have yielded another 5 HP or so. But every little bit helps. Again there is no official confirmation by GM on this, just anecdotal evidence based on what 04 owners report on the forum.
Hopefully some 04 owners will respond with their opinions as well as dyno numbers and if any of them experienced the "lean codes" after installing an intake.
Tom
It's hard to prove but owner reports seem to indicate the 04's are a little stronger. It appears some of the fat that GM built into the LSX series of motors was taken out yielding slightly more HP. Many 04 owner's report getting "lean" codes when they install any low restriction intake like Blackwing etc. Where as, on almost every other LSX motor even after installing an intake the AFR's are still rich. If I had to guess this factory tweaking (if true) may have yielded another 5 HP or so. But every little bit helps. Again there is no official confirmation by GM on this, just anecdotal evidence based on what 04 owners report on the forum.
Hopefully some 04 owners will respond with their opinions as well as dyno numbers and if any of them experienced the "lean codes" after installing an intake.
Tom
05-25-2005, 10:43 PM
#22
Race Director
Member Since: Oct 2000
Location: Deal's Gap 2004 NCM Motorsports track supporter
Posts: 13,915
Received 1,103 Likes
on
717 Posts
Originally Posted by HEB
So this means when I install my Blackwing,it will throw a lean code?? If so should I take the Blackwing off? HEB
I have thrown no codes......
05-26-2005, 08:34 AM
#24
Burning Brakes
04, HAlltech TRAP, no codes. Got a buddy- 03, TRAP, so many codes he took it off.
I heard on here somewhere that the 04 FI included bigger injectors, but maybe that was just an assumption based on the "better capabilities" alluded to above. ??
I heard on here somewhere that the 04 FI included bigger injectors, but maybe that was just an assumption based on the "better capabilities" alluded to above. ??
05-26-2005, 03:59 PM
#27
Safety Car
Originally Posted by Shylor
That is not what I was talking about. All C5's have a plug in the console.
then what are you talking about?
05-26-2005, 04:56 PM
#28
Get Some!
Originally Posted by acrace
The '04s also had softer rear sway bar bushings and stiffer front control arm bushings (don't remember if it was the upper or lower control arms).
01-04-2013, 08:34 AM
#32
Race Director
