Therapeutic Redlining?
02-22-06, 09:21 AM
#26
Originally Posted by arghx
well IMO there's a big difference between holding a car at say 6k and 7k, even when ported. You start to get water pump cavitation at that rpm and you're likely out of your powerband unless you're heavily modified or driving an s5 n/a. Don't get me wrong though, I took my car to Virginia International Raceway and was taching 6000-7500 for three 30 minute sessions. I never go WOT in 4th unless I'm 100+, but then again I've got an n/a.
Plus I can't stand hearing that damn buzzer continuously haha
Plus I can't stand hearing that damn buzzer continuously haha
02-22-06, 09:24 AM
#27
MattB
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Originally Posted by dDuB
Yah the PCM (computer) is too damn smart!
It recallibrates itself and retunes itself based on your driving habits. Drive on the highway a lot at cruise? It will compensate over time. Do a lot of slow, stop-and-go city driving? It will compensate over time.
There was a guy on rx8club that cleared his memory, put on a piggy back controller/logger and slowly watched things change over the months. The PCM actually started to somewhat learn the tune from the piggy back and compensate for it. Thus the tune started to become less and less useful over time...
Damn this modern technology, it's time for standalone!
The whole redlining thing on rx8club is just to clear out the carbon. It was actually suggested by Mazda in a TSB. But this was in response to the shitty auto rx8's out there, the old design ones. People were getting way too much carbon buildup, low compression, and many other issues after like 30-50k miles. This was because they were ONLY driving in the 2-3k range all the time. So Mazda basically said "redline your damn engines once in a while, jeez!"
It recallibrates itself and retunes itself based on your driving habits. Drive on the highway a lot at cruise? It will compensate over time. Do a lot of slow, stop-and-go city driving? It will compensate over time.
There was a guy on rx8club that cleared his memory, put on a piggy back controller/logger and slowly watched things change over the months. The PCM actually started to somewhat learn the tune from the piggy back and compensate for it. Thus the tune started to become less and less useful over time...
Damn this modern technology, it's time for standalone!
The whole redlining thing on rx8club is just to clear out the carbon. It was actually suggested by Mazda in a TSB. But this was in response to the shitty auto rx8's out there, the old design ones. People were getting way too much carbon buildup, low compression, and many other issues after like 30-50k miles. This was because they were ONLY driving in the 2-3k range all the time. So Mazda basically said "redline your damn engines once in a while, jeez!"
haha that sucks...i would be pissed if i spent money on mods and then the computer just compensated, making them useless...
02-22-06, 09:45 AM
#28
s4 Tails for Life!
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Does anyone know the exact RPM at which all the ports open up? I'm more curious than anything... waitin' for ice or aaron to find this thread...
Thanks for all the replies everyone, good stuff.
iSP33D-for-J3SUS
Thanks for all the replies everyone, good stuff.
iSP33D-for-J3SUS
02-22-06, 01:24 PM
#30
Passing life by
How many rotary drivers does it take to change a spark plug?
The S4 ports open off back pressure from the exhaust they start to open at 1.2psi and fully open at 2.1psi the RPM has jack didaly to do with this. They are generally not sapost to open under no load IE neutral if they do you more then likely have an exhaust problem. But some times on a fresh motor they pop open in neutral.
The S5's work off the air pump but I don’t know the ins and outs.
Damn dDub beat me to the PCM explanation hehe. And I am stuck with a shitty AT god I hate that ******* car! I really do.
The S4 ports open off back pressure from the exhaust they start to open at 1.2psi and fully open at 2.1psi the RPM has jack didaly to do with this. They are generally not sapost to open under no load IE neutral if they do you more then likely have an exhaust problem. But some times on a fresh motor they pop open in neutral.
The S5's work off the air pump but I don’t know the ins and outs.
Damn dDub beat me to the PCM explanation hehe. And I am stuck with a shitty AT god I hate that ******* car! I really do.
02-22-06, 01:56 PM
#35
Banned. I got OWNED!!!
Yea I've heard of people using them for fmic setups... I don't see why it wouldn't work... I mean hell anything has to be better than the Greddy elbow... Why they pointed it right at the brake booster I'll never understand... 
lol
lol
02-22-06, 04:36 PM
#36
very sleepy!!
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Originally Posted by iceblue
How many rotary drivers does it take to change a spark plug?
The S4 ports open off back pressure from the exhaust they start to open at 1.2psi and fully open at 2.1psi the RPM has jack didaly to do with this. They are generally not sapost to open under no load IE neutral if they do you more then likely have an exhaust problem. But some times on a fresh motor they pop open in neutral.
The S4 ports open off back pressure from the exhaust they start to open at 1.2psi and fully open at 2.1psi the RPM has jack didaly to do with this. They are generally not sapost to open under no load IE neutral if they do you more then likely have an exhaust problem. But some times on a fresh motor they pop open in neutral.
09-09-06, 06:42 PM
#37
24 yrs driving 2nd Gen RX
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Originally Posted by misterstyx69
just get out and have fun with the car ..Gas it, and hit the "buzzer " every once in awhile..the car was made for driving..Enjoy it ,but try not to mistreat it..Me?..I'm gonna get the Revs up whenever I can..I figure I paid for a car to drive it..not to sit and worry about it..I like my car ..so I'll maintain it and try to make it a car that will last (hopefully for a couple years)..If it breaks down, so be it..no big deal..(buzzer ..lets you know that the car can still Give Er!)
I've had my '87TII since new and I 'drive the p!$$ out if it" every day. I boost as much as it can off the lights and I burn it through the curves in the Rocky Mountains on my commute to work (Denver to Grand Junction) each week.
Howsit run you may ask? Fantastic.
Just passed 221000 miles and haven't opened the engine for any work. The biggest repair expenses have been this summer - new oil seals and new exhaust. Only stranded by the motor quitting twice - both times when Alt belt broke too far between exits for the battery to keep it running.
Best (and most fun) car in the world IMHO!@
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