JLT CAI withOUT a tune?

[MontelG]

I've used a CAI on almost all my cars but they have always been Airaid or K&N, which don't require a tune. What happens if I run a JLT CAI without the tune on the 5.0? It says one is required and I understand the need if I want to take full advantage of it. I'm wondering what would happen for those times when I have to go back to the stock tune for warranty work or to troubleshoot something? Or perhaps the tuner has an issue and I'm waiting on a new one.

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[2Cool]

It will run very lean and likely cause engine damage. Much more air coming in than the stock ECU sees and can account for.

 

[MontelG]

It will run very lean and likely cause engine damage. Much more air coming in than the stock ECU sees and can account for.

Thanks 2Cool! So the stock ECU can account for some additional air, such as with Airaid and K&N systems, but can't account for the larger volume from the bigger systems like JLT. I love the idea of the performance gains with the JLT but the dependency on the tune may lead me back to Airaid.

 

[dubster99]

No point in getting an intake that doesn't require a tune.

 

[Grimace427]

Thanks 2Cool! So the stock ECU can account for some additional air, such as with Airaid and K&N systems, but can't account for the larger volume from the bigger systems like JLT. I love the idea of the performance gains with the JLT but the dependency on the tune may lead me back to Airaid.

It's not the greater flow of a CAI that the ECU can't account for, it's the fact that the mass airflow sensor housing is calibrated to a specific size for accurate reading. If you change the MAF housing diameter with a larger CAI than the sensor won't send accurate information to the ECU.

 

[Varekai]

There's a new intake out from PMAS that doesn't require a tune.

http://www.mustang6g.com/forums/showthread.php?t=22113&highlight=pmas

 

[MontelG]

No point in getting an intake that doesn't require a tune.

While the gains will certainly be less, there are still some gains. For me the key is if it requires a tune, that is a limiting factor. I'll apply a tune to maximize what I can get but I want the ability to go back to stock if I need or want. To me, that ability is worth giving up the additional gains I'd get from the JLT. (IMO)

It's not the greater flow of a CAI that the ECU can't account for, it's the fact that the mass airflow sensor housing is calibrated to a specific size for accurate reading. If you change the MAF housing diameter with a larger CAI than the sensor won't send accurate information to the ECU.

Ahh. Very helpful. Thanks!

 

[dubster99]

You won't feel a difference just by bolting on an intake that doesn't require a tune.

 

[Process]

nope, larger maf housing, requires the transfer rate to be adjusted. In English, don't do it.

 

[Vinny@JLTPerformance]

These guys are all correct, the car would go into limp mode pretty quickly if run without a tune.

 

[Chameleon]

OP get the JLT and a tune. Its a great bang for the buck!

 

[Vinny@JLTPerformance]

No intake system on the market has more third party testing done all with similar results!

As advertised, hard to find this day and age

 

[Rob@Evolution]

We have a great tune for the S550 and being a 6G member we offer 6% off on anything.

 

[Vinny@JLTPerformance]

JLT..

 

[Chameleon]

What intake system are you referring to?

His username is a big indicator.

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