GT 13.1 What's wrong?

[foghat]

I understand your logic but since I already have a shop that installed everything and did a tune and works just fine un-doing all that seems like a bit of a waste. If the Lund tune was all I was working with I believe that process would be worth it.

My device is updated, went through that whole back and forth process lol.

I guess my point was, if the Lund tune was running fine initially and now no longer does, I personally would want to make sure that the factory tune still worked fine.

I am not even close to an expert, but if (and I mean if), the shop somehow did something that prevented the lund tune from running properly - what about the factory tune...

Not even sure if that could be possible, but I know I'd be trying the factory tune again just for piece of mind. But obviously the intake would have to come off to do this. I understand it is a pretty simple install, so might be worth it...

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[beefcake]

I just want to load the original tune you sent that seemed to have no problems. Is that impossible now that the options/setting got changed? I understand that the datalog is how you get information but how is that possible if a car is barely able to drive?

I really am trying to compare the tunes to see if I could get a better time with the Lund which is where this all started. If getting the Lund is this much work I can just work with the dyno tune I got and work with their shop. Just thought it would be a nice battle and was hoping Lund had better times actually, so I could go yell at the shop.

the only possibility would be that the tune corrupt on your pc if it worked fine before

if you jump in the ticket, you can request that jon send you another file from scratch from the hyperlink and try that and see if that fixes it.

I have seen files go bad, but they are usually bad from the beginning, anything can happen

 

[Livernois Motorsports]

I guess my point was, if the Lund tune was running fine initially and now no longer does, I personally would want to make sure that the factory tune still worked fine.

The factory tune would remain unaffected by the aftermarket tuning.

 

[Mark5825]

I got a new file from John and will test it.

 

[foghat]

The factory tune would remain unaffected by the aftermarket tuning.

I understand that. So should have the Lund tune remained unaffected. Yet, the Lund tune ran fine before the custom tune was created and then it didn't run well after the custom tune was created.

I am not suggesting that the custom tune some how changed the Lund (or factory tune), but am wondering if the shop somehow did something (I have no idea what) to the car that their tune is 'masking', but the that the Lund tune is now exposing - and could it be the case the factory tune would also 'expose' the issue (if there is in fact one).

It is a stretch and I have no idea what it could be that the shop would have done, but hence the suggestion of starting from square one to see where things are at.

Maybe it is just like Beef suggests - a case of the Lund tune file somehow becoming corrupted.

 

[Livernois Motorsports]

Corruption is an extremely unlikely case if the files are extracted from a secure server. And the 3rd party shop (I will not refer to whomever it is with that derogatory name) would not have access to the Lund tuning as tunes are locked by whoever makes them. So the car was flashed back to stock and then flashed to the 3rd party tune. I do not see how anything could have gone wrong there, but I guess ANYTHING is possible.

 

[50THPONY]

Please keep us posted as I'm interested in a Lund tune, but truth be told, I'm wondering if those of us that are on the fence about tuning a brand new car might be better off waiting just a while longer. The Gen. 2 Coyotes don't seem to have as much unleashed yet as the Gen. 1's did.

I got a new file from John and will test it.

 

[Livernois Motorsports]

Please keep us posted as I'm interested in a Lund tune, but truth be told, I'm wondering if those of us that are on the fence about tuning a brand new car might be better off waiting just a while longer. The Gen. 2 Coyotes don't seem to have as much unleashed yet as the Gen. 1's did.

What do you mean? We get plenty out of the S550. We have completed 3 700rwhp builds already.

 

[50THPONY]

I'm strictly referring to CAI and tune only. There doesn't seem to be any consistent "as much as XX HP and XX TQ gains" claims being mentioned regarding the S550's as there are for the 11-14 Coyotes. I'm sure that has a lot to do with the maturity of the Gen. 1 platform.

What do you mean? We get plenty out of the S550. We have completed 3 700rwhp builds already.

 

[Mark5825]

Got new file within hours from John. Very happy with his customer service. As for the performance.....lets begin:

1. Dyno Tune "S" Sport+ 0 RPM 25 PSI (13.058 @ 108.1)
2. Dyno Tune "S" Sport+ 1500 RPM 25 PSI (13.237 @ 109.6)
3. Dyno Tune "D" Sport+ 0 RPM 25 PSI (13.240 @109.6)

4. Lund Tune "S" Sport+ 500 RPM 25 PSI (13.135 @ 110.5)
5. Lund Tune "D" Sport+ 1500 RPM 20 PSI (12.982 @ 111.0)
6. Lund Tune "S" Track 1000 RPM 20 PSI (12.952 @ 111.2)
7. Lund Tune "S" Track 1000 RPM 20 PSI (12.914 @ 111.7) (2nd Driver*)

*2nd driver has much more experience and drove their stock GT at 12.8

So it looks like the Lund did get the better times although I didn't run the dyno tune in track mode and I was getting a better feel for the car as I went. In any case the Lund seems to have won this round.

Now shall we address these slow times? JLT intake, Catback Exhaust, and Tune should be getting into the mid 12's from everything I've seen. Even when I find a post to compare with the same 60' I end up with a worse ET. Shouldn't my MPH be higher?

Looks like lowering PSI from 25 to 20 made a direct impact to 60'

 

[SVTFreak]

Fwiw, I have both vmp and Lund tune on mine. Vmp was Cai and stock air box and Lund is stock airbox. I've been through changes on both. Never had an issue writing over each other or their own or stock. Issues are the exceptions, not the norms, especially coming from good tuners and vendors. My Lund came through beefcake.

Don't let a couple people with issues stop you. There are literally thousands, maybe even 10's of thousands, without. These guys (I speak from experience for both Lund and vmp, and toss beefcake in there also, he'll help facilitate it, but I'm sure livernois and AM/bama qualify) will be there when needed to get your car right.

 

[Mark5825]

Thanks for the info.

I'm satisfied now that the real "issues" with the tunes are gone now. They both seems to be driving fine. Now I'm trying to figure why the times are a bit slow. With both tunes being on the slow side and even having a different driver is it down to the idea that the car is just a slower one to begin with or is there still hope? Next idea is going back to stock intake and stock tune to get a "baseline" line.

 

[beefcake]

time are what they are due to driver / track / elevation

you have one tune, that should def be better than stock, then you have another tune that is .2 tenths better than billy bobs (I say billy bobs as we have no shop name, so we need to call it something btw, and especially since like others, they try to down lund, and throw a bunch of timing at a car, and then it runs slower.....)

if your picking up .1 to .3 over stock, which more than likely you are, with billy bob, and .2 more with lund.. 4 to 5 tenths is about right.

I've seen stick cars go bone stock as low as 12.4 on the 11-14, and I've seen bone stock stick cars go 13.4s

same goes for autos, almost a second swing

 

[Tommy V]

Hey op my opinion thats not bad for street tires.I ran a 12.8 at 113 with the same mods and when i put the drag radials on im sure i will be in the low 12,s.Put some drag radials on and watch how ur et drops.If u could squeeze a 1.9 60 ft with ur stock tires u probably be at 12.7 or 12.6.

 

[Mark5825]

I just refer to theirs as dyno tune or shop tune. What looks to be somewhat consistent is the 60' on most of their were worse, maybe the times would be about even if I had some better starts at the beginning. The other thing I notice is all of the Lund runs have a higher MPH.

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