Ditched my JLT

[Need4Speed15]

As for 2015 Silver GT gentleman, he has 590 post and I think 575 of them are in intake threads about how great the stock air box is. Self tuned, no time slips, no logs, this wasn't even on a 2015...he's leaving that part out.

Nice, details would have helped. I asked but he didn't get specific. I was under the impression he was talking about a 2015+ S550? If he was not that would have been good information to state...especially on a S550 board.

I've run JLT's on my 2012 (both carbon and plastic), and now my 2015. I've been extremely happy with them!

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[John S.]

I can't remember the last time I saw an aftermarket intake tube actually outperform the stock setup until some major changes took place for airflow needs and I still haven't found proof of it here.

That is because the stock intakes are not a restriction. Ford has done their research. I went on about this for a while in another JLT thread where Jay himself said he had ZERO data of his intake vs the stock in terms of flow rates and restrictions. All he says is its bigger than stock and all the fast cars run his intakes. He basically takes all the credit for all the other work done to actual race cars because they run his intake. The problem with a larger intake is air velocity drops so you WILL see a drop in throttle response as MANY JLT users have experienced. The factory tube is already larger than the throttle body so going bigger isn't adding performance. Any performance increase in due to the tune. I don't know why people can't grasp that. It's nice to see a few people like you who get it. The JLT looks nice but it wont add a lick of performance over stock. You are more likely to lose driveabilty down low where you daily drive car.

 

[partyelmarty]

That is because the stock intakes are not a restriction. Ford has done their research. I went on about this for a while in another JLT thread where Jay himself said he had ZERO data of his intake vs the stock in terms of flow rates and restrictions. All he says is its bigger than stock and all the fast cars run his intakes. He basically takes all the credit for all the other work done to actual race cars because they run his intake. The problem with a larger intake is air velocity drops so you WILL see a drop in throttle response as MANY JLT users have experienced. The factory tube is already larger than the throttle body so going bigger isn't adding performance. Any performance increase in due to the tune. I don't know why people can't grasp that. It's nice to see a few people like you who get it. The JLT looks nice but it wont add a lick of performance over stock. You are more likely to lose driveabilty down low where you daily drive car.

This.

Too many people believe the hype and crap that JLT likes to put out there. Fact is, JLT sucks.

 

[Vinny@JLTPerformance]

That is because the stock intakes are not a restriction. Ford has done their research. I went on about this for a while in another JLT thread where Jay himself said he had ZERO data of his intake vs the stock in terms of flow rates and restrictions. All he says is its bigger than stock and all the fast cars run his intakes. He basically takes all the credit for all the other work done to actual race cars because they run his intake. The problem with a larger intake is air velocity drops so you WILL see a drop in throttle response as MANY JLT users have experienced. The factory tube is already larger than the throttle body so going bigger isn't adding performance. Any performance increase in due to the tune. I don't know why people can't grasp that. It's nice to see a few people like you who get it. The JLT looks nice but it wont add a lick of performance over stock. You are more likely to lose driveabilty down low where you daily drive car.

Taking all the credit? Hardly, truth is some of the fastest car's in the country run our intakes. We have no contingency plan for these racers.

The Ford engineers thing is always pretty funny to read, we have dinner with those guys from time to time. Always nice to have friends in the industry.

This.

Too many people believe the hype and crap that JLT likes to put out there. Fact is, JLT sucks.

Hype as in independent testing? There's more data available out there on our systems than any other brands intake systems combined.

Run your stock boxes, that's fine. Maybe go tell the guys who do it on a more serious level how much performance they are losing.

 

[Sick03L]

Taking all the credit? Hardly, truth is some of the fastest car's in the country run our intakes. We have no contingency plan for these racers.

The Ford engineers thing is always pretty funny to read, we have dinner with those guys from time to time. Always nice to have friends in the industry.



Hype as in independent testing? There's more data available out there on our systems than any other brands intake systems combined.

Run your stock boxes, that's fine. Maybe go tell the guys who do it on a more serious level how much performance they are losing.

I think the entire point is being missed. There is no question that a larger intake allows more power to be made on certain applications. But for a tune only car... specifically an S550 there are no serious gains to be made with one. There are plenty of real word track times to back this up. Not just 1 guy on this forum. You make a solid product no doubt. And if it was an enclosed design I would of kept it. But having IATS in the 150s at idle here in FL is unacceptable for me as the tune pulls timing over 138*? I'm willing to trade off the possible 5hp gain at redline for a cooler air charge off idle. But to each his own. Next intake will be connected to a FI Source for me anyhow.

 

[John S.]

Vinny could you post your testing data showing the stock air intake assembly is a restriction and the data showing where your intake is better. Go ahead, I'll wait.

I know you don't have ANY test data as Jay himself has already admitted. All you two do is say race cars run them so they must work. If there is enough mods done to a car to where the factory intake becomes a restriction then yes your intake is probably better. For the average street car your intake is not any better and is actually worse down low in the rpm range.

 

[partyelmarty]

Taking all the credit? Hardly, truth is some of the fastest car's in the country run our intakes. We have no contingency plan for these racers.

The Ford engineers thing is always pretty funny to read, we have dinner with those guys from time to time. Always nice to have friends in the industry.



Hype as in independent testing? There's more data available out there on our systems than any other brands intake systems combined.

Run your stock boxes, that's fine. Maybe go tell the guys who do it on a more serious level how much performance they are losing.

I'm running a Airaid MPX Intake. The fit and finish is 100x better than any JLT I've ever seen.

I would love to see data on a NA, basic bolt-on car with a JLT compared to stock. And no, you can't compare a stock tuned coyote to a tuned Coyote with a intake and claim the intake made the power lol.

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