LT Headers Low-Mid Range Power Loss

[LethalPerformance]

Here are the results we got on our car with a custom tune from Lund Racing. There were no changes in the tune made for the intake/tune setup to the one with the longtubes.

As you can see there's no loss in TQ anywhere in the RPM range. Just gains.

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[Livernois Motorsports]

Thanks for your comments. So I think what you're telling me is by getting a dyno and finding out that I made a total of 440HP isn't going to tell me that the mapping/tune is good for my car during normal daily driving. Thanks Again

Not explicitly, obviously we did not tune your car. So I cannot comment on your specific situation. I was merely giving you insight into how we go about providing our tuning services.

 

[spoole96]

I guess that means run our tuning then

I'm not currently running a Lund tune either. Just fyi.

 

[spoole96]

Here are the results we got on our car with a custom tune from Lund Racing. There were no changes in the tune made for the intake/tune setup to the one with the longtubes.

As you can see there's no loss in TQ anywhere in the RPM range. Just gains.

I may flash the tune that I had before I installed the LT's (just CAI and catback). The car ran very smooth before the headers. Maybe that will be the right tune. Its worth a try.

 

[Project Whitemare]

Here are the results we got on our car with a custom tune from Lund Racing. There were no changes in the tune made for the intake/tune setup to the one with the longtubes.

As you can see there's no loss in TQ anywhere in the RPM range. Just gains.

But what does your Butt Dyno say?

 

[spoole96]

But what does your Butt Dyno say?

There's always got to be a smartass in the crowd.

 

[Mikeg4572]

Did you ever get this issue resolved?

 

[spoole96]

Did you ever get this issue resolved?

Yeah Bama got it lined out for me. I had to do a few data logs. I'm not sure what adjustments they made. But, the bottom end feels much stronger and smoother now. The top end is a beast. The driveability is good now. And no more codes. They have been great to work with. Really good customer service from experience.

 

[Mikeg4572]

I feel like I am having the same issue. I have not dyno'd it yet. It is definitely louder so I'm not sure if it's that or I have lost power. I reached out to tuner to see if they had any ideas.

 

[RSKTAKR]

I was planning on picking up a set of 1 7/8" LT's with an o/r pipe in a couple weeks but after reading this thread and hearing about all the tuners that are having problems being able to get around the torque management on these cars, I think I will just wait. I think its kind of crap that I see and hear about all these customers that have these problems with their tunes, and these "big name" tuners cant get the tune/problems figured out yet they post all over online that they have these cars figured out and can get you good tunes, charge wtf they charge for these tunes, but then cant get them figured out or to run right. MAYBE these tuners shouldn't advertise that they have it alllllll figured out etc when actually they don't, and we don't find out until our $$ is already gone, then other known tuners come around stating the same thing like we all have lots of extra $$ sitting around to waste to switch to their tunes that offer the same empty promises. The tuner I currently use is having the same problem with not being able to get around the torque management with these so I have the hanging rpm issue with my car, just like other well known tuners I see and hear about... but you sure don't get told any of the chances of that happening to your car up front before blowing the $$ on it and then being stuck with that tune, only to hear/read from other tuners "hey come over here and let us tune your car for $35476846868" when no one really has this torque management problem figured out. Maybe I'm the only s550 owner out here that is kinda tired of hearing/reading that problems aren't figured out with these new PCM's yet, but tuners sure are quick to try to get you to jump on their bandwagon, and spend your $$... but I doubt it.

 

[beefcake]

I was planning on picking up a set of 1 7/8" LT's with an o/r pipe in a couple weeks but after reading this thread and hearing about all the tuners that are having problems being able to get around the torque management on these cars, I think I will just wait. I think its kind of crap that I see and hear about all these customers that have these problems with their tunes, and these "big name" tuners cant get the tune/problems figured out yet they post all over online that they have these cars figured out and can get you good tunes, charge wtf they charge for these tunes, but then cant get them figured out or to run right. MAYBE these tuners shouldn't advertise that they have it alllllll figured out etc when actually they don't, and we don't find out until our $$ is already gone, then other known tuners come around stating the same thing like we all have lots of extra $$ sitting around to waste to switch to their tunes that offer the same empty promises. The tuner I currently use is having the same problem with not being able to get around the torque management with these so I have the hanging rpm issue with my car, just like other well known tuners I see and hear about... but you sure don't get told any of the chances of that happening to your car up front before blowing the $$ on it and then being stuck with that tune, only to hear/read from other tuners "hey come over here and let us tune your car for $35476846868" when no one really has this torque management problem figured out. Maybe I'm the only s550 owner out here that is kinda tired of hearing/reading that problems aren't figured out with these new PCM's yet, but tuners sure are quick to try to get you to jump on their bandwagon, and spend your $$... but I doubt it.

Lund has 0 issues getting around torque management.

If our car can run 9's with a power adder and no issues with torque management, certainly a mid 11 second car n/a is not an issue whatsoever.

Not everyone can do what lund can do with these cars.

You could be very happy with one of our lund custom tunes

 

[RSKTAKR]

Lund has 0 issues getting around torque management.

If our car can run 9's with a power adder and no issues with torque management, certainly a mid 11 second car n/a is not an issue whatsoever.

Not everyone can do what lund can do with these cars.

You could be very happy with one of our lund custom tunes

From what I have read and heard, that's not true. However to be fair I have heard that he is working on the issue.

 

[LethalPerformance]

I was planning on picking up a set of 1 7/8" LT's with an o/r pipe in a couple weeks but after reading this thread and hearing about all the tuners that are having problems being able to get around the torque management on these cars, I think I will just wait. I think its kind of crap that I see and hear about all these customers that have these problems with their tunes, and these "big name" tuners cant get the tune/problems figured out yet they post all over online that they have these cars figured out and can get you good tunes, charge wtf they charge for these tunes, but then cant get them figured out or to run right. MAYBE these tuners shouldn't advertise that they have it alllllll figured out etc when actually they don't, and we don't find out until our $$ is already gone, then other known tuners come around stating the same thing like we all have lots of extra $$ sitting around to waste to switch to their tunes that offer the same empty promises. The tuner I currently use is having the same problem with not being able to get around the torque management with these so I have the hanging rpm issue with my car, just like other well known tuners I see and hear about... but you sure don't get told any of the chances of that happening to your car up front before blowing the $$ on it and then being stuck with that tune, only to hear/read from other tuners "hey come over here and let us tune your car for $35476846868" when no one really has this torque management problem figured out. Maybe I'm the only s550 owner out here that is kinda tired of hearing/reading that problems aren't figured out with these new PCM's yet, but tuners sure are quick to try to get you to jump on their bandwagon, and spend your $$... but I doubt it.

Just like Terry said we have zero issues with LT's being tuned by Lund Racing. We run them on our car and haven't had any issues and we're making a lot more power than most people here. I've got a bunch of customers on here with them as well all of which were custom tuned by Lund and they'll say the same.

Let us know if there's anything we can help you with.

Thanks,
Jared

 

[RSKTAKR]

Well apparently there are a few customers (only two that know of) that have had the hanging RPM issue with the Lund tune. My tuner isn't Lund and I have the same problem. I'm not sure if they are Lethal customers or Beefcake customers or anything as I didn't ask, but was stated that its Lund tunes. That was just towards the end of last month too. I just hope whatever problem it is , is fixed soon. Last I heard the customer was on Rev 4 of the tune and is still having the problem and was told it wasn't the tune, but that it was the car. I wouldn't think that's the case, but I'm no tuner. I thought it might have been something to do with strategy codes of certain cars, but their strategy codes are 1 digit different then mine.

 

[foghat]

Well apparently there are a few customers (only two that know of) that have had the hanging RPM issue with the Lund tune. My tuner isn't Lund and I have the same problem and I wasn't going to name names but the Lund tune is the one I have read about over on another forum. I'm not sure if they are Lethal customers or Beefcake customers or anything as I didn't ask, but was for sure stated that its Lund tunes. That was just towards the end of last month too. I just hope whatever problem it is , is fixed soon. Last I heard the customer was on Rev 4 of the tune and is still having the problem and was told it wasn't the tune, but that it was the car. I wouldn't think that's the case, but I'm no tuner.

I didn't think hanging rpm was related to torque management.

The stock tune has hanging rpm as well, I thought this was an emissions thing. This is not to say it can maybe be tuned out. I don't know.

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