Cobb AP Discussion Thread
- Thread starter djdanny5000
- Start date
i have been running a beta map stage 2.. and car runs great !!
i see only .3 - .7 kr while driving light throttle.. and 0 kr at wot.. i dont smoke and dont use oil..
while i do drive about 50 miles a day to / from work..
well over the weekend i went to a car show about two hours away.. it was all hwy driving.. while doing about 80 mph.. not giving much gas.. i would see weird kr.. up to 4.6 i saw it mostly letting off the gas.. i wasnt boosting in top gear or giving it much throttle.. it was freaking me out...
what .. i cant drive on the hwy without getting knock ??
it was about 55 deg. out side temp.. first time it had cooled off here in florida..
when i got back into normal driving i saw just the normal kr.. whats up with the hwy driving stuff i wonder ?? i dont have a catch can.. could the intake be loading up with oil from crusing on the hwy ?? but i only saw it when i let off the gas... should i worry ??
that sucks.. i can drive around town beating the car and see no kr.. go on a little trip on the hwy and i see crazy kr while cruising.. ( no cruise controle ) this sucks..
anyone..???
i see only .3 - .7 kr while driving light throttle.. and 0 kr at wot.. i dont smoke and dont use oil..
while i do drive about 50 miles a day to / from work..
well over the weekend i went to a car show about two hours away.. it was all hwy driving.. while doing about 80 mph.. not giving much gas.. i would see weird kr.. up to 4.6 i saw it mostly letting off the gas.. i wasnt boosting in top gear or giving it much throttle.. it was freaking me out...
what .. i cant drive on the hwy without getting knock ??
it was about 55 deg. out side temp.. first time it had cooled off here in florida..
when i got back into normal driving i saw just the normal kr.. whats up with the hwy driving stuff i wonder ?? i dont have a catch can.. could the intake be loading up with oil from crusing on the hwy ?? but i only saw it when i let off the gas... should i worry ??
that sucks.. i can drive around town beating the car and see no kr.. go on a little trip on the hwy and i see crazy kr while cruising.. ( no cruise controle ) this sucks..
anyone..???
- :
- 2007 Mazdaspeed 6 Sport
Zinger, see my posts regarding FFS and LC:
http://www.mazdas247.com/forum/showpost.php?p=4729635&postcount=496
http://www.mazdas247.com/forum/showpost.php?p=4771007&postcount=579
http://www.mazdas247.com/forum/showpost.php?p=4729635&postcount=496
http://www.mazdas247.com/forum/showpost.php?p=4771007&postcount=579
ok so its all in mph?
also for ffs the rpm limiter will be where you need to go past before the ffs function will run?
- :
- 2007 Mazdaspeed 6 Sport
The RPM limiters are in revs. The Speed Limiter Hysteresis is in MPH.
Since we have the benefit of AWD, your Speed Limiter Hysteresis should be low (6mph). This will allow for some really small amount of wheel slip without being intrusive on your launch. Your Launch Control rev limiter will be active until you surpass the 6mph mark. After 6mph, you will be in Flat-Foot Shifting rev limiter territory.
So if you're going 10mph with this setup, and you push the clutch in all the way and stand on the gas you will rev up to your FFS rev limiter.
If you are going 4mph with this setup, and you push the clutch in all the way and stand on the gas you will rev up to your LC rev limiter.
- :
- 2007 Mazdaspeed 6 Sport
I would suggest going back to a non-beta map. All but one user who has used them has had the same knock you're experiencing. If you switch back to a non-beta map you will not have these problems. It's nothing to be worried about if you make the switch.
- :
- 2011 Mustang GT
I have seen and am seeing the same results without a map loaded (haven't reflashed the car since it came back from the dealer). I see PT knock on the highway until the car gets up to operating temp. I saw it only a few minutes ago on the freeway cruising at 78 mph, just above 3000 rpm IIRC. I noticed that although the numbers jump pretty high, the car won't pull fuel, and if you jump on the gas, it drops to zero again (KR).
I'm still attributing this to the poor PCV system, but I'm not 100% sure.
As for the LC, I have mine set at 12 mph for the enabling speed. My hysteresis is set at 4 also.
my car runs great and NO knock at wot and only .3-.7 around town ect..
but on the hwy.. thats another story.. the maps are only affecting WOT correct ???? so at almost no throttle at 80 mph am i seeing randome KR ?? and when i take my foot off the gas at those speeds ?? could it be no catch can ??
or the cold weather ?
but on the hwy.. thats another story.. the maps are only affecting WOT correct ???? so at almost no throttle at 80 mph am i seeing randome KR ?? and when i take my foot off the gas at those speeds ?? could it be no catch can ??
or the cold weather ?
- :
- 2007 Mazdaspeed 6 Sport
The maps tell your car what to do at every throttle point, not just WOT. Again, it is the beta map that you are using. Every member here who has tried those beta maps has had the same experience. Most of which experienced exactly 4.6 KR at highway speeds on part-throttle. Change to a non-beta map.
Speedsicks
Member
- :
- 2007 MS6
Are all of the maps on Bova's mzdspd.com site considered beta? I posted earlier regarding the same problem with the highway cruising (~3000 RMP) KR just as tunersteve was describing. If it's the beta maps why is his car still doing it on a stock map?
- :
- 2011 Mustang GT
Yes, all the maps except for those from Cobb's website are considered beta.
As for my car, I don't really know. I have been testing a theory lately, when my DH registers knock not to let off the throttle. At part throttle, the car should not see KR for any reason, especially with cruise engaged. On my way to and from school, I did not disengage the cruise when the knock alert went off. Each subsequent KR spike was shorter and shorter. I am going to continue this until I feel the car respond or the KR alerts go away.
so back to the FFS limiter... for ex, let me know if this is right or not.
So FFS Rev Limiter: 6000
LC Vehicle Speed: 15
LC Rev Limit: 3200
Speed Limiter Hysteris (faulk the spelling): 4
so im at the line, revs up to 3200 and a good launch. LC speed limiter is 15mph so once i break that im at the 6700 rpm rev limiter of the car. when i break the 6000 rev limit of ffs i can keep my foot down and the car will frop back to 6000 when i clutch in?
im sorry, i have never used anything like LC or FFS Before. i just want to know whats going to happen when i set the values so i dont blow up my car lol.
So FFS Rev Limiter: 6000
LC Vehicle Speed: 15
LC Rev Limit: 3200
Speed Limiter Hysteris (faulk the spelling): 4
so im at the line, revs up to 3200 and a good launch. LC speed limiter is 15mph so once i break that im at the 6700 rpm rev limiter of the car. when i break the 6000 rev limit of ffs i can keep my foot down and the car will frop back to 6000 when i clutch in?
im sorry, i have never used anything like LC or FFS Before. i just want to know whats going to happen when i set the values so i dont blow up my car lol.
Speedsicks
Member
- :
- 2007 MS6
Yeah, I've stopped lettin up on the gas with this type of knock too. Like you said it cycles lower and lower back down to zero. Try opening up your windows when this happens though, because I've noticed several times that I smell that same ol' smoking turbo/burning oil smell from before I got mine replaced, minus the smoke. If I get this strange PT knock going uphill, it always smells like this.
I'm going to flash to the nonbeta Stage1 91 v1.02 to see if it still happens and also because my first WOT run with the Stage1 91 +SF v1.03 only showed PSI topping out at high 16, while the Fujita map had me spiking at 20 (but knocking). I need to find that middle ground.
I'm going to flash to the nonbeta Stage1 91 v1.02 to see if it still happens and also because my first WOT run with the Stage1 91 +SF v1.03 only showed PSI topping out at high 16, while the Fujita map had me spiking at 20 (but knocking). I need to find that middle ground.
- :
- 2011 Mustang GT
I had the same exact KR problems on the AP map. Never got it at WOT, just cruising at PT. I'm hoping that I can figure out a solution to get rid of these, since I think I'll be flashing the car again this weekend. I've been wanting to put a few miles back on the new turbo before I let it run loose again.
Speedsicks
Member
- :
- 2007 MS6
Good luck to you, let us know of any break-throughs. What's the latest word on Mazda's efforts to develop a fix?
- :
- 2011 Mustang GT
Will do. The last i heard it was pushed back with no official release date, and pending a parts list and more testing. Right now I think they're just dragging their feet because they still don't have a definite answer.
The local SM was telling me of a CX-7 that came in for smoking. They did the 5w-40 change, and it was due for a second oil change. The regional rep. authorized a turbo replacement. Let me figure out the logic between a $75 oil change or a $1500 turbo replacement...doesn't quite add up.
- :
- 2007 Mazdaspeed 6 Sport
You will likely want to raise your LC revs to closer to 4000. When you launch, the car will drop revs depending on how fast you let off the clutch. You do not want to be below 3200 revs when it dips or the car will fall flat on its face.
For example, LC set at 3200. You launch at 3200 and the revs drop to 2600 as you're feathering it out. You will not be boosting and the car will have to spool back up. With LC set at 4000, revs will drop to 3400 but you will maintain some boost and keep your turbo spooling.
