Cobb AP Discussion Thread

[tunersteve]

I know in speaking with several Cobb associates, they said NLS and LC would be firmware updates and map settings, not major changes. With that said, we should have some answers here in the next few weeks after they complete their testing.

 

[crlsnlopes]

thats what i was hoping for after they renewed their interest in updating the ots maps for the ms6..the wait begins..again

 

[tunersteve]

Speaking of, I'm reloading all my MS6 maps back onto the AP since I got it back Friday night. I missed having it back on the car. I'll have it reloaded with Stage 2 93 v101d later tonight.

 

[Blendercloud]

The western half of Missouri doesn't have access to 93 octane. Even using 91 with some (not all) of a bottle of octane boost, I managed to ping a 7 on the KR under normal driving. I immediately dialed a 91 map. I'm still seeing some KR of around the 1.5-2.5 range... can't wait to get 93 back in it.

 

[bova80]

the jumpers in the pictures of the v2 ap are actually the jumpers the subie needs in order to put it in test mode to be able to flash. they have nothing to do with mazdas or the ability to enable launch control or no lift shifting.

 

[crlsnlopes]

ok thanks for clarifying that bova

 

[ms6dj]

The western half of Missouri doesn't have access to 93 octane. Even using 91 with some (not all) of a bottle of octane boost, I managed to ping a 7 on the KR under normal driving. I immediately dialed a 91 map. I'm still seeing some KR of around the 1.5-2.5 range... can't wait to get 93 back in it.

We only have 92 octance in KC that I can find. I also gave the 93 octane maps a shot on 92 pump gas w/o octane boost and monitored very closely for KR... but luckily, I guess, it never went over the very seldom 0.35 or 0.7 at WOT or part throttle over several hundred miles of dirivng on the 93 map.

Can/does the ECU adjust in other ways if it somehow notices that lower octane gas is being used? I don't see a way that the ECU can detect this other than KR. In which case, I may continue using (against recommendations (boom08) ) a 93 octane map on 92 gas, while continuing to always monitor KR and switching down to a 91 map if KR becomes consistent or I see pings > 1.

 

[Blendercloud]

I don't think the ECU compensates in any other way. If it's not in the programming, I wouldn't see anything else that would tell it to compensate.

 

[tunersteve]

I would still recommend using a 91 map with 92 gas regardless. You don't want to run the risk of damaging the motor. In reality, you may want to look into using ATR to make a 92 octane map to squeeze every bit of power out of that map that you can.

 

[1quickturbosix]

Im running 93 octane with my Stage1+SF 91 v101a map, due to the fact as running a 93 octane map makes my car spike at 23 psi.... NOT COOL!

 

[ReignStorm]

So just installed my AP today and I have a dumb question.

With Standback and other standalones the boost psi on the dashhawk is not true. Since the AP actually flashes a new tune direct rather than override the ECU commands, is the boost psi now true on screen?

 

[tunersteve]

So just installed my AP today and I have a dumb question.

With Standback and other standalones the boost psi on the dashhawk is not true. Since the AP actually flashes a new tune direct rather than override the ECU commands, is the boost psi now true on screen?

Where have you seen/heard this?

 

[FORZDA 1]

So just installed my AP today and I have a dumb question.

With Standback and other

standalones

(Piggybacks) the boost psi on the dashhawk is not true. Since the AP actually flashes a new tune direct rather than override the ECU commands, is the boost psi now true on screen?

Yes, with a piggyback EMS, the DH boost number is not correct as the MAP value is biased by the "tune" and even clamped to a low value with the SB to get the desired actual boost without tripping a boost cut, excessive load, etc.

Yes, with the AP, the boost number displayed on the DH is correct.

 

[ReignStorm]

Thanks Forzda and "piggybacks" was the word I was searching for, you should have seen me staring into space trying to think of that word, LOL... Was driving me crazy.

Tunersteve piggybacks simply intercept a given signal from the ECU then send their own commands in it's place. I'm sure it is more sophisticated than that but essentially the data you would see on your DH would only display ECU commands/believed parameters vs the actual. Hence, Boost Psi that was typically lower than what was actually taking place.

 

[Meydron]

Hey guys i bought my AP back in March i think, and this week it stopped working. When i plug it in it just flashes between a black screen and the accessport screen. Does Cobb have a warranty on these things or am i boned?

 

[Blendercloud]

I would just call them and see if they know what's going on with it. Customer support over the phone should be pretty easy.

 

[1quickturbosix]

So im trying to post a log from my ap on here? It shows up as a .csv file, says invalid file when I try to upload. Any ideas or directions on how to convert?

 

[Blendercloud]

So im trying to post a log from my ap on here? It shows up as a .csv file, says invalid file when I try to upload. Any ideas or directions on how to convert?

Open it back up, go to "Save As" and then at the bottom where it says "File Type" you need to change that over to .xls format.

 

[1quickturbosix]

Nevermind, here it is. Look right around 26 seconds, I went WOT then let off the gas and droped it into neutral and coasted, look at how the fuel pressure and rpms are just all over the place. I can literally watch my tach just bounce all over. The rpms have dropped so low that the car has killed before. Anyone else ever have this problem?

 

[ReignStorm]

I'm no expert but what are the normal Fuel pressure levels at lower RPM's
supposed to be?
Yours are well below 500 at points and that is when you are seeing those extremely low RPM dips and almost stalling.

I guess I should have read more cuz you already said that, silly me...