Trilogy chip rev limit

[txmarauder]

Did a bad thing tonight. Was leaving a party at midnight and my buddy wanted a ride to feel the power. So we drove for a little bit to get the temp up and then from a stop i nailed it and went sideways and let off and then got back into it. Well it felt like it shifted into second so i let off and then it reved up real high again. I look down to see i had the shifter in 1 so i quickly shifted it into drive and the car shifted then the engine gave what felt and sounded like a burb or very small backfire. When i wound out first gear i did not hear your typical bouncing off the rev limiter and could have swore it shifted into second. So my ? is with the standard trilogy tune you get with the kit what is the rev set @ and secondly will the tranny shift itself into 2nd if the selector is in 1 as a safety when too much rpm or tranny fluid psi is reached. The car seems fine, eng temp never got hot and no new noises. Hopefully it is ok. Thanks for any 411.
Greg

[Blackened300a]

My Car is N/A and if I wound it out in 1st, It would bounce off the limiter and shift itself. My Chevy Avalance and Impala did the same thing. It must be a tranny safety feature for all cars

[gpfarrell]

Even with the selector in 1st, mine will grab 2nd when I'm not smart enough to do so myself. Now my old Merc with the C6 will run across the country in 1st gear!

[MikesMerc]

Lidio and I were just talking about this.

The trans in the MM has the ability to be programmed to shift into 2nd at programmed rpms even though the shifter remains in 1st. My understanding is this feature is disabled in the software form the factory.

Lido was telling me that he has enabled this feature and LOVES it on the street when "horsing around" a little. I am not sure whether his standard tune includes that adjustment, but I would not be surprised if it did.

[DEFYANT]

Why not just leave it in drive w/ o/d off?

[HwyCruiser]

Why not just leave it in drive w/ o/d off?

What he said. I never manually shift anymore. The rev limiter comes up way too fast. Even with that, every time I hit it in "D" I just cringe. It can't be any good for anything.

[BillyGman]

My Marauder will stay in 1st gear no matter what, if I have the shifter set in 1st, and I happen to have the standard out-of-the-box Trilogy set-up. The rev limiter on this set-up is set to 6,600 RPM's, however, with my 4.56 gears in the rear,even when I have the shifter in drive, it isn't uncommon for a burnout from a dead punch to get the engine reving right up to 7,000 RPM's before it hits second gear because of how quickly the revs climb with the 4.56's. In fact, I just did that twice last night.:D Your engine is fine. ;)

[txmarauder]

Why not just leave it in drive w/ o/d off?
Force of habbit since my Grand national is raced that way. MUST REMEMBER TO LEAVE IN DRIVE:banghead: .
Thanks for the reassuring replies, cant afford a motor or trans right now.:)
Greg

[DEFYANT]

I have the same "problem" with that damm traction control button!;)

[mongo]

Billy,
If you don't mind me asking, how much exactly do you budget each year for tires? I know my BFG's lasted 12,000 miles & cost me $420 mounted & balanced.
Mong:)

[BillyGman]

Billy,
If you don't mind me asking, how much exactly do you budget each year for tires? I know my BFG's lasted 12,000 miles & cost me $420 mounted & balanced.
Mong:)LOL....... I'll answer you with a quote taken from Barry (aka "Cruztaker") since I veiw the following in the same way as he does..... "If you're serious about doing burnouts, then you're always stocked up on tires" :D

I have a whole stack of tires in my garage at any given time. Currently, between the 6 snow tires I have, the two drag radials, and the 4 factory stock ones, I literally have tires stacked up to the ceiling in my garage. And Like Barry, I also have installed Line-Lock in my Marauder so that I won't warp the back brake rotors from excessive heat during third gear tire smoke shows. Although I do dead punch burnouts more often than I do Line-Lock burnouts since I only get 1-3 real good Line-Lock burnouts out of a pair of tires (which is why I rarely do Line-Lock burnouts with the drag radials cuz they're just too expensive).

[mongo]

Billy,
SInce you metioned it reminds me of a question I have been meaning to ask. Can line lock be installed on a traction control 04 MM?

Mongo

[BillyGman]

Billy,
SInce you metioned it reminds me of a question I have been meaning to ask. Can line lock be installed on a traction control 04 MM?

MongoHmmm, I'm not sure, but I think that as long as you turn the T/C off, while the Line-Lock is being used, then it would be fine.

[MitchB]

Lidio and I were just talking about this.

The trans in the MM has the ability to be programmed to shift into 2nd at programmed rpms even though the shifter remains in 1st. My understanding is this feature is disabled in the software form the factory.

Lido was telling me that he has enabled this feature and LOVES it on the street when "horsing around" a little. I am not sure whether his standard tune includes that adjustment, but I would not be surprised if it did.

The factory software programs the trans to shift into second, overriding a manual 1st gear command, at 7000 RPM. You can select any RPM you want. Unless you select a lower engine speed, you obviously are not using this feature.

Mitch

[MikesMerc]

Since 7k is far too high for a good 1st/2nd shift point, then the feature is indeed virtually disabled from the factory (except as some form of rev limiter). Mine is set for 6100.

[MitchB]

Since 7k is far too high for a good 1st/2nd shift point, then the feature is indeed virtually disabled from the factory (except as some form of rev limiter). Mine is set for 6100.

To be functional, in your case, you should probably set this even lower. 6100 is when the EEC will command the shift, but it will take time for the trans to actually complete it. With the power you have, you probably gain RPMs too quickly in first gear for the 6100 RPM setting to be meaningful.

Mitch

[BillyGman]

To be functional, in your case, you should probably set this even lower. 6100 is when the EEC will command the shift, but it will take time for the trans to actually complete it. With the power you have, you probably gain RPMs too quickly in first gear for the 6100 RPM setting to be meaningful.

MitchYa know, I think you may have a point there. I've always wondered if it would help me avoid bouncing of of the rev limiter in first during a burnout, if I had the shift points set at 5,800 RPM's instead of at 6,100 RPM's like they presently are on my car. The engine never bounces off the rev limiter during WOT blasts while the tires are getting traction, but during a burnout, I just cannot avoid hiting the rev limiter in 1st gear before the transmission hits 2nd gear since the engine just revs up there so quickly.:confused:

[Zack]

Everything MitchB said is correct.
You NEVER want to manually shift this car, N/A and especially Supercharged.
When you shift into 2, the O/D band is applied. At WOT with a blower, it will eat up the band faster than you can imagine.

[Krytin]

Everything MitchB said is correct.
You NEVER want to manually shift this car, N/A and especially Supercharged.
When you shift into 2, the O/D band is applied. At WOT with a blower, it will eat up the band faster than you can imagine.
Thanks for that 411! I always wondered why the manual 1-2 shift hit so much harder. I guess I can stop that now!

[MikesMerc]

To be functional, in your case, you should probably set this even lower. 6100 is when the EEC will command the shift, but it will take time for the trans to actually complete it. With the power you have, you probably gain RPMs too quickly in first gear for the 6100 RPM setting to be meaningful.

Mitch

To be honest, I like them right where they are at. The physical shift takes place right around 6250 to 6300 which is great for my set up.

That said, I'm sure there are others that would prefer a lower shift point. Like it was mentioned earlier, depending on the car and set up, everyone can customize thier shift points.