JLT Intake everything wrong

[Soulja4187]

Lol ... I’m not screwing my car up either. There’s no improvement from installing aftermarket CAI. The stock one works fine. A tune will benefit but I just don’t want to mess with a car that already hauls ass but I get why people do it ... just not for me

Same here, I just got my 2020 GT Premium. The only mods are new wheels, smoked Led side lights, jacking rails, oil catch can and tints

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[Rapid Red]

Your MAF readings will be completely out of whack which is why the car won’t run. There’s “tune required” intakes, such as the JLT, and “no tune” intakes such as K&N, AEM, etc.. or some that offer both (Steeda, Roush) with a removable insert.

You’re best off to re-install the stock intake until you purchase the tune.. otherwise you’ll have the same issue.

Not to be a dick, but it’s not the car’s fault

Peaked my interest, check my thinking, have Roush cold air & tune. Getting ants in my pants to install it, looking the box sitting in the shop.

Best practice would be to have the stock tune bumped, then install, of course without the insert ?

Need too drive up the mileage clicks, for the first oil change. Dealer does it, also Roush certified. Think the X pipe will have an impact with regards to the L1 tune? It is there now, just an after thought?

BTW your assessment is correct with regards to the advice given to the OP. Sounds like his upgrade has the fuel too air ratio lean, Screwing up the timing & advance also.


Cars R smarter then the average bear these days
Pep

 

[Shifting_Gears]

Peaked my interest, check my thinking, have Roush cold air & tune. Getting ants in my pants to install it, looking the box sitting in the shop.

Best practice would be to have the stock tune bumped, then install, of course without the insert ?

Need too drive up the mileage clicks, for the first oil change. Dealer does it, also Roush certified. Think the X pipe will have an impact with regards to the L1 tune? It is there now, just an after thought?

BTW your assessment is correct with regards to the advice given to the OP. Sounds like his upgrade has the fuel too air ratio lean, Screwing up the timing & advance also.


Cars R smarter then the average bear these days
Pep

Yes - you got it.

If you install the intake and no tune, utilize the insert.

If you install the intake and the tune (I assume the Roush tune is made for use with their intake), don’t utilize the insert.

You don’t need to tune or adjust a tune for the mid-pipe or catback for that matter. Only time tuning is needed with exhaust is if you’re removing converters or going longtube headers. Some will say tuning isn’t required for longtubes, but it will help maximize gains.

 

[Sig556]

At this point with your car throwing codes after running with a tune-required mod (JLT CAI) on the stock tune, I wish be hesitant to give you a tune if I were a tuner as well given your car is throwing codes. Your best bet is to disconnect the battery, put the stock parts back on, reconnect battery, start it up, and check for codes from there to make sure the car is healthy. Then, work with Lund to get a tune for the CAI. Once you have the tune, install JLT, load tune, and enjoy. Hopefully, nothing was damaged by running the car with a tune-required CAI on stock tune.

Best advice yet. This is exactly what I would do.

 

[rancid]

At this point with your car throwing codes after running with a tune-required mod (JLT CAI) on the stock tune, I wish be hesitant to give you a tune if I were a tuner as well given your car is throwing codes. Your best bet is to disconnect the battery, put the stock parts back on, reconnect battery, start it up, and check for codes from there to make sure the car is healthy. Then, work with Lund to get a tune for the CAI. Once you have the tune, install JLT, load tune, and enjoy. Hopefully, nothing was damaged by running the car with a tune-required CAI on stock tune.

This x2.

 

[Mustangpursuit]

Yes - you got it.

If you install the intake and no tune, utilize the insert.

If you install the intake and the tune (I assume the Roush tune is made for use with their intake), don’t utilize the insert.

You don’t need to tune or adjust a tune for the mid-pipe or catback for that matter. Only time tuning is needed with exhaust is if you’re removing converters or going longtube headers. Some will say tuning isn’t required for longtubes, but it will help maximize gains.

Quote from Roush...

"The calibration for this performance kit requires the 98mm insert remain in the housing (do not remove).
Removing the insert can create a check engine light."

since the instructions lack the answer to leave insert in or out for the Power Pacs, Roush did respond and said insert is to be left in for the Roush Pac Tune. insert out is for custom tunes other than the Roush canned one.

Lund tuning does have a tick box option for Roush CAI without Insert if you would like a custom tune with the insert out.

 

[Shifting_Gears]

Quote from Roush...

"The calibration for this performance kit requires the 98mm insert remain in the housing (do not remove).
Removing the insert can create a check engine light."

since the instructions lack the answer to leave insert in or out for the Power Pacs, Roush did respond and said insert is to be left in for the Roush Pac Tune. insert out is for custom tunes other than the Roush canned one.

Lund tuning does have a tick box option for Roush CAI without Insert if you would like a custom tune with the insert out.

Good info. Surprised Roush utilizes the insert on their calibration.

 

[Mustangpursuit]

Good info. Surprised Roush utilizes the insert on their calibration.

Well AM never got that info, and did a demonstration and dyno with it using the Roush canned tune and left the insert out.... No idea if that degraded the dyno results?

 

[zero_chance]

Same here, I just got my 2020 GT Premium. The only mods are new wheels, smoked Led side lights, jacking rails, oil catch can and tints

Trust me that’ll last all of a few months. I bought mine and told my wife I’ll never need to upgrade it, cuz it already has nearly what my old KB car had. LOL. I’m 20k plus into upgrades now.

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