JLT Dyno Numbers
Are you saying that SCT is producing "custom tunes" for your intake system, or are you relying on their canned generic tunes in your previous statement?
"We can not guarantee other tuners tunes. We test the tunes that come from the makers of the XCal-2, and thats SCT themselves".
"We can not guarantee other tuners tunes. We test the tunes that come from the makers of the XCal-2, and thats SCT themselves".
Originally Posted by Marc Carpenter
Are you saying that SCT is producing "custom tunes" for your intake system, or are you relying on their canned generic tunes in your previous statement?
"We can not guarantee other tuners tunes. We test the tunes that come from the makers of the XCal-2, and thats SCT themselves".
"We can not guarantee other tuners tunes. We test the tunes that come from the makers of the XCal-2, and thats SCT themselves".
http://jlttruecoldair.com/zencart/in...&cPath=1_16_38
At JLT we decided to break from the norm with this all new Ram Air Intake for the new 5.4 F-150 trucks. Until now all cold air intakes were the same old boring 90 degree bend and a filter behind the driver’s side headlight. Not anymore!
With this totally new intake from JLT you get something different and something better. We shorted the distance the air needs to travel, got together with SCT for a tune and came up with huge power as a result.
You get a high quality 89mm billet aluminum Mass Air Flow housing, that has been C&C milled to hold your stock MAF sensor, a large JLT heat shied designed to block the radiant heat from the engine at low speed and the HUGE, in your face, S&B life time re-usable filter, shall we say, Corvette LT1 style in front of the throttle body.
We joined forces with the best at SCT to make the perfect power package. The SCT X-2 tuner comes pre-loaded with JLT specific tunes in 87, 91 and 93 octane ratings. With the SCT X-2 tuner you can make 100’s of adjustments for gear and tire changes, shift point changes, check trouble & clear codes and on and on. Read more about the X-2 on the SCT page.
At JLT we tested this kit over and over and showed repeated results in the 25-30+ HP gain and an amazing 40-50+ TQ gain at the rear wheels!!!! Check out the gains at only 3100 RPM, 35+HP and 55+TQ!! This is power you can feel, take a look.
One big question is going to be about sucking in hot air... Well this is far from the truth. Go out and look under the hood of your truck and look down. What do you see? The ground and a huge grill. When your at speeds above 25 MPH there is tons of air flow under your hood. Using the SCT X-2 and a laptop we datalogged inlet air temps in all driving conditions and found only 15-20 degree hotter temps under the hood in city traffic and a mere 6-8 at 55+. This proved to us that you do not need to box in the filter and not give it the air it needs.
With this totally new intake from JLT you get something different and something better. We shorted the distance the air needs to travel, got together with SCT for a tune and came up with huge power as a result.
You get a high quality 89mm billet aluminum Mass Air Flow housing, that has been C&C milled to hold your stock MAF sensor, a large JLT heat shied designed to block the radiant heat from the engine at low speed and the HUGE, in your face, S&B life time re-usable filter, shall we say, Corvette LT1 style in front of the throttle body.
We joined forces with the best at SCT to make the perfect power package. The SCT X-2 tuner comes pre-loaded with JLT specific tunes in 87, 91 and 93 octane ratings. With the SCT X-2 tuner you can make 100’s of adjustments for gear and tire changes, shift point changes, check trouble & clear codes and on and on. Read more about the X-2 on the SCT page.
At JLT we tested this kit over and over and showed repeated results in the 25-30+ HP gain and an amazing 40-50+ TQ gain at the rear wheels!!!! Check out the gains at only 3100 RPM, 35+HP and 55+TQ!! This is power you can feel, take a look.
One big question is going to be about sucking in hot air... Well this is far from the truth. Go out and look under the hood of your truck and look down. What do you see? The ground and a huge grill. When your at speeds above 25 MPH there is tons of air flow under your hood. Using the SCT X-2 and a laptop we datalogged inlet air temps in all driving conditions and found only 15-20 degree hotter temps under the hood in city traffic and a mere 6-8 at 55+. This proved to us that you do not need to box in the filter and not give it the air it needs.
Originally Posted by Tucker1154
Again, let me correct you.
You did not buy a JLT/SCT combo from JLT Performance Inc. You bought a JLT intake and got a tune and tuner else where. That is what I'm trying to say.
This is very important because the way you say it you got OUR package and that's not the case.
The tune can make the differance, so I believe if you had the complete package as we tested and offer your feeling would be differant. So in all honesty your statement in not a fair one, as the customer here has the whole package from JLT and got the power claimed by JLT.
We can not gaurantee other tuners tunes. We test the tunes that come from the makers of the X-2 and that's SCT themselves.
I'm glad you made posts praising the JLT, but most I have read have been about your truck not starting (tune related) and how the AF1 was better in your opinion (again, tune related)but not mentioning that you got the tune else where. The JLT flows air, the tune makes good use of the air. If the tunes not right, the truck will not respond.
So as much as I thank you for your support all I'm asking is for the post to be accurate in there content.
FWIW, I just had a customer call me personally who just raced a truck with a AFI/X-2 tuned by a reputable tuner here and it was no contest.
I may need to pick one up for some testing.
You did not buy a JLT/SCT combo from JLT Performance Inc. You bought a JLT intake and got a tune and tuner else where. That is what I'm trying to say.
This is very important because the way you say it you got OUR package and that's not the case.
The tune can make the differance, so I believe if you had the complete package as we tested and offer your feeling would be differant. So in all honesty your statement in not a fair one, as the customer here has the whole package from JLT and got the power claimed by JLT.
We can not gaurantee other tuners tunes. We test the tunes that come from the makers of the X-2 and that's SCT themselves.
I'm glad you made posts praising the JLT, but most I have read have been about your truck not starting (tune related) and how the AF1 was better in your opinion (again, tune related)but not mentioning that you got the tune else where. The JLT flows air, the tune makes good use of the air. If the tunes not right, the truck will not respond.
So as much as I thank you for your support all I'm asking is for the post to be accurate in there content.
FWIW, I just had a customer call me personally who just raced a truck with a AFI/X-2 tuned by a reputable tuner here and it was no contest.

I may need to pick one up for some testing.

As for your customer racing a AF1/X-2 tuned truck did he also mention all the variables such as reg - ext cab- exaust-tire size-gears etc! If not then all the facts are not straight are they? I did not put my vehicle on a dyno but I did run the 1/4 with the jlt and with the af1 and my times are so close that it would be hard to say one was better that the other. Short of supercharging I dont think any intake made would make a race between two F-150's no contest. Anyhow ill say it again, I did not add my comment to bash the JLT and if it seems that way then I apologize.
P.S.I am sure there are alot of members that would be glad to get there trucks dynoed with your setup and with the competitors setup in a unbiased situation! Just a thought.......
Last edited by mwheue; Sep 5, 2006 at 10:16 PM.
Originally Posted by Marc Carpenter
Are you saying that SCT is producing "custom tunes" for your intake system, or are you relying on their canned generic tunes in your previous statement?
"We can not guarantee other tuners tunes. We test the tunes that come from the makers of the XCal-2, and thats SCT themselves".
"We can not guarantee other tuners tunes. We test the tunes that come from the makers of the XCal-2, and thats SCT themselves".
SCT gets every new JLT intake and does there own "custom" tuning for them. Once done I personally test them to make sure there spot on with the personal custom tuning done to the truck here locally. This is the way it is for our shootout winning 05-up GT and V6 Mustang kits.
If you want to call that a "canned" tune your partialy correct. Most "canned" tunes are very generic. SCT's tunes for JLT are not. Just take a look at the A/F in the thread starters dyno run. Nice and smooth and safe. Room for improvement, but also safe enough to tow a huge load with no detenation. Just what a truck owner wants.
I hear too many owners on these forums state there "custom" tune is pinging. What's the answer??? Get better gas...
The tune should be safe and powerful for all fuel ratings as seen in all our testing.
mwheue:
Let me try this again,.
You bought a tune and tuner form another source (Jusnes) and a intake form me. They do not sell the same tunes as we do from SCT. They do there own!
This is why it's so important your statements be clear when you lump your package and impression of the JLT intake system. You didn't get the JLT/SCT package.
This is why all our direct customers are happy.
Also, the race was 2 4x4 screws.
Last night I leaned out the A/F 2% and added 2 degrees timing across the board, and it definitely feels like it picked up some. With a full tank of 93, there is no hint of detonation whatsoever. I'll get it back on the dyno soon and post some results.
Originally Posted by Tucker1154
mwheue:
Let me try this again,.
You bought a tune and tuner form another source (Jusnes) and a intake form me. They do not sell the same tunes as we do from SCT. They do there own!
This is why it's so important your statements be clear when you lump your package and impression of the JLT intake system. You didn't get the JLT/SCT package.
This is why all our direct customers are happy.
Also, the race was 2 4x4 screws.
Let me try this again,.
You bought a tune and tuner form another source (Jusnes) and a intake form me. They do not sell the same tunes as we do from SCT. They do there own!
This is why it's so important your statements be clear when you lump your package and impression of the JLT intake system. You didn't get the JLT/SCT package.
This is why all our direct customers are happy.
Also, the race was 2 4x4 screws.
Hey all, I'm "that guy" doing the dyno today....
Just wanted to point out I've got more than just an AF1 on my truck right now. There's the dual exhaust and the custom tune that I've got installed. It sounds like part of the issue here is matching the correct tune to the correct intake.
Keep an eye out this evening for my results. I'm scheduled to dyno at 5:00, hopefully I'll have everything posted no later than 9:00 tonight.
Just wanted to point out I've got more than just an AF1 on my truck right now. There's the dual exhaust and the custom tune that I've got installed. It sounds like part of the issue here is matching the correct tune to the correct intake.
Keep an eye out this evening for my results. I'm scheduled to dyno at 5:00, hopefully I'll have everything posted no later than 9:00 tonight.
Originally Posted by NCSU_05_FX4
Hey all, I'm "that guy" doing the dyno today....
Just wanted to point out I've got more than just an AF1 on my truck right now. There's the dual exhaust and the custom tune that I've got installed. It sounds like part of the issue here is matching the correct tune to the correct intake.
Keep an eye out this evening for my results. I'm scheduled to dyno at 5:00, hopefully I'll have everything posted no later than 9:00 tonight.
Just wanted to point out I've got more than just an AF1 on my truck right now. There's the dual exhaust and the custom tune that I've got installed. It sounds like part of the issue here is matching the correct tune to the correct intake.
Keep an eye out this evening for my results. I'm scheduled to dyno at 5:00, hopefully I'll have everything posted no later than 9:00 tonight.
Looking forward to the results as well.
Keep in mind, all trucks and dynos are differant, but it will still be a good thing to know what you get.
Good luck!
Either way these trucks need more power
Keep in mind, all trucks and dynos are differant, but it will still be a good thing to know what you get.
Good luck!
Either way these trucks need more power
Here's NCSU's #'s

Be sure to get whom ever tuned your truck to make the needed adjustment as your so rich you can actually "wash" your cylinder walls down. Not good.
Above truck is AF1 and **** tune
below is JLT intake and SCT tune
Both truck have a cat back as well.
BTW, thread starters #'s and A/F again:
RPM...HP...TQ...A/F
3022 164.5 286 12.3
3099 172.3 292 12.3
3175 179.1 296 12.4
3265 185.8 299 12.5
3353 193.3 303 12.5
3440 199.5 305 12.4
3525 204.7 305 12.3
3608 210.0 306 12.3
3686 215.5 307 12.2
3781 221.3 307 12.2
3861 226.8 308 12.3
3946 232.2 309 12.3
4032 237.8 310 12.4
4110 242.5 310 12.5
4190 245.9 308 12.5
4270 248.7 306 12.4
4346 251.3 304 12.4
4432 253.7 301 12.5
4508 255.8 298 12.6
4585 257.6 295 12.5
4668 259.4 292 12.5
4745 261.0 289 12.6
4823 262.3 286 12.6
4901 263.0 282 12.5
4973 262.6 277 12.5

Be sure to get whom ever tuned your truck to make the needed adjustment as your so rich you can actually "wash" your cylinder walls down. Not good.
Above truck is AF1 and **** tune
below is JLT intake and SCT tune
Both truck have a cat back as well.
BTW, thread starters #'s and A/F again:
RPM...HP...TQ...A/F
3022 164.5 286 12.3
3099 172.3 292 12.3
3175 179.1 296 12.4
3265 185.8 299 12.5
3353 193.3 303 12.5
3440 199.5 305 12.4
3525 204.7 305 12.3
3608 210.0 306 12.3
3686 215.5 307 12.2
3781 221.3 307 12.2
3861 226.8 308 12.3
3946 232.2 309 12.3
4032 237.8 310 12.4
4110 242.5 310 12.5
4190 245.9 308 12.5
4270 248.7 306 12.4
4346 251.3 304 12.4
4432 253.7 301 12.5
4508 255.8 298 12.6
4585 257.6 295 12.5
4668 259.4 292 12.5
4745 261.0 289 12.6
4823 262.3 286 12.6
4901 263.0 282 12.5
4973 262.6 277 12.5
Sorry if it came across that way.
More then the #'s I'm pointing out the the plug and play of the kits.
I do think you'll gain some power for sure with the adjusted A/F, but as I said in your thread, it will take some tunes to be emailed back and forth and a few trips to the dyno to check the work.
That can get expencive fast and be a head ache to boot.
BTW, you have a X-2 correct? You can pull fuel out with the adjustability in the tuner, as long as he didn't lock you out of it.
That may help get your A/F where you want it easier and faster, but be sure to go over this with your tuner.
Best of luck,
Jay
More then the #'s I'm pointing out the the plug and play of the kits.
I do think you'll gain some power for sure with the adjusted A/F, but as I said in your thread, it will take some tunes to be emailed back and forth and a few trips to the dyno to check the work.
That can get expencive fast and be a head ache to boot.
BTW, you have a X-2 correct? You can pull fuel out with the adjustability in the tuner, as long as he didn't lock you out of it.
That may help get your A/F where you want it easier and faster, but be sure to go over this with your tuner.
Best of luck,
Jay





100th post... Yay!