JLT CAI withOUT a tune?

[MontelG]

Thanks for everyone's input and feedback! I have no doubt that JLT is one of the best on the market.

I'm always way overly cautious with any mods I do for the first ~5000 miles due to fears (real or imagined) of warranty issues. Many of the biggest problems are most likely to crop up early and I don't want to do anything to raise any doubt in the dealer's mind if it was mod related.

I've gone down the lemon law and dealer buyback path in the past. That road was BAD enough without any mods for them to question, and that was with a dealership I have a great relationship with. I can only imagine how bad it would have been otherwise.

We all mod based on our goals, budget and risk comfort level. Until the new car smell wears off I won't tune or go beyond a basic CAI, cat-back and basic suspension upgrades. For me, the risk of a warranty 'battle' with the dealer/Ford is too great for my comfort level to do a tune, especially if I can't take it back off before warranty work, even if I know I'll be leaving some HP on the table for now.

Again...just my personal comfort level, which is admittedly skewed because of my lemon law experience in the past.

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[Vile_the_Bastage]

You can take the tune off and revert to stock before warranty work. However, from what I've seen posted on this forum, apparently the ECU logs how many times it's been flashed and Ford service departments can see that.

Can they prove it was you? Meh, probably not. But, they would probably start adding a hell of a lot of resistance in case something went wrong.

 

[Tommy V]

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

Thats absolutely not true ,it was just explained the only reason for a tune on the jlt is because of the larger size tube.In na form it allows no more air in then my airaid race intake.The velocity of the air which is how fast the air travels through the tube is the other reason it requires a tune.Mine made 9 hp to the wheels with no adjustments to the tune and my a/f are perfect.Now the bigger tubes will really show their power if one goes forced induction,other then that their all Close to same hp tune or untuned .

 

[Varekai]

Check out the thread I posted about the PMAS intake. I don't have it so I have nothing to vouch for, but the reason why it doesn't require a tune but will probably be better than the other intakes that have restrictors for no tunes is the PMAS has a different MAS sensor that is setup for the bigger intake.

 

[HTX_5.0]

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.

This

 

[phrenetiK]

next thread title "2015 mustang gt withOUT a motor? mine blowed up"

 

[Ehdrian]

My mustang wouldn't even idle without the tune change. It'd start and choke out.

 

[Old 5 Oh]

Thats absolutely not true ,it was just explained the only reason for a tune on the jlt is because of the larger size tube.In na form it allows no more air in then my airaid race intake.The velocity of the air which is how fast the air travels through the tube is the other reason it requires a tune.Mine made 9 hp to the wheels with no adjustments to the tune and my a/f are perfect.Now the bigger tubes will really show their power if one goes forced induction,other then that their all Close to same hp tune or untuned .

The mass air sensor is perfectly able to account for flow velocity and temperature, but it does assume it it knows the area of the inlet tube. If the inlet tube is enlarged, say, to allow more flow, then the computer needs a tweak to account for the larger area.

No CAI with the same inlet throat as stock can offer any great increase over stock. If you want a real increase, you need to bite the bullet and get one that requires a tune.

There are no magic bullets.

 

[dubster99]

Thats absolutely not true ,it was just explained the only reason for a tune on the jlt is because of the larger size tube.In na form it allows no more air in then my airaid race intake.The velocity of the air which is how fast the air travels through the tube is the other reason it requires a tune.Mine made 9 hp to the wheels with no adjustments to the tune and my a/f are perfect.Now the bigger tubes will really show their power if one goes forced induction,other then that their all Close to same hp tune or untuned .

Maybe your butt dyno is more finely tuned. But you won't feel that increase on a 400+ hp car. I call BS on your same hp from an intake tuned or untuned.

 

[leszek]

The mass air sensor is perfectly able to account for flow velocity and temperature, but it does assume it it knows the area of the inlet tube. If the inlet tube is enlarged, say, to allow more flow, then the computer needs a tweak to account for the larger area.

No CAI with the same inlet throat as stock can offer any great increase over stock.

true

If you want a real increase, you need to bite the bullet and get one that requires a tune.

false, you can get a larger diameter tube and use a different MAF that maps air flow correctly to stock. See PMAS threads for an example.

 

[beefcake]

any cai without a tune is worthless, the jlt is our goto kit for these cars

we have a great package with the jlt, lund tune and x4, it will def wake the car up

 

[foghat]

any cai without a tune is worthless, the jlt is our goto kit for these cars

we have a great package with the jlt, lund tune and x4, it will def wake the car up

The pmas cai might be a bit of game changer for non-tuned intakes.

Looking to install my jlt and lund tune either tomorrow or saturday. can't wait for the pure thunders to arrive so I can get them and the headers installed.

 

[Tommy V]

U guys believe what u want,first all the top cai intakes have larger intake tubes,so as being the same size as stock is a false statement.Pmas new intake that comes with a new maf to account for the size of the tube,just think about that for a minute.No changes to the computer just a calibrated maf,that says it all.And to beefcake and not sure if u mean tune as in cai/tune the car also or tune for the cai,but i will glady drive to your shop and test cai that are tuned and untuned and split the cost with u.I bet theirs no more then a couple hp diffenence between them.Maybe u ment cai/and tune car because their is a big difference their.

 

[Tommy V]

The mass air sensor is perfectly able to account for flow velocity and temperature, but it does assume it it knows the area of the inlet tube. If the inlet tube is enlarged, say, to allow more flow, then the computer needs a tweak to account for the larger area.

No CAI with the same inlet throat as stock can offer any great increase over stock. If you want a real increase, you need to bite the bullet and get one that requires a tune.

There are no magic bullets.

Has nothing to do with more air flow,velocity and calibrating the maf for the larger tube,which is done for drivability.Believe what u want,their all good cai the big tubes give u room for improvement down the road if u want to go Fi.

 

[Vinny@JLTPerformance]

U guys believe what u want,first all the top cai intakes have larger intake tubes,so as being the same size as stock is a false statement.Pmas new intake that comes with a new maf to account for the size of the tube,just think about that for a minute.No changes to the computer just a calibrated maf,that says it all.And to beefcake and not sure if u mean tune as in cai/tune the car also or tune for the cai,but i will glady drive to your shop and test cai that are tuned and untuned and split the cost with u.I bet theirs no more then a couple hp diffenence between them.Maybe u ment cai/and tune car because their is a big difference their.

A couple horsepower, is a couple horsepower. So why settle?

As for the other kits, it'll be interesting to see some real world data and third party testing. Interesting theory on replacing the MAF sensor with an aftermarket unit, but an entire different can of worms there.

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