I went to the dyno yesterday. The only mods are the JLT air intake with the JLT X-Cal2, and a Flowmaster Super 40 SIDO muffler. This was the 93 octane tune. The A/F is about perfect, but looks like it can be leaned out just a little bit. The timing in the tune is also pretty conservative, I think a couple more degrees would bring the TQ up quite a bit. I'll experiment more later.

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

 

Nice, for the combination in mods thats great performance. It took significantly more to break into the 260's. Not sure where your torque is but the hp is up there. You are also running 93 octane which provides a good gain in performance. Only 91 is available here in Cali. *sigh*

 

Nice...I picked up 30 hp and 55+ tq with the JLT/Xcal.

 

I am not buying that the JLT is better than a AF1/SCT combo. After having owned both I can say that the AF1 seems to performs better all around. I will say that the JLT sounds much better for those of you who do not like alot of noise. But then again I never dynoed either setup so I am just going on seat of the pants feel not fact.

 

Nice, looks like you gained around 23RWHP from the JLT/Xcal combo. How much does the JLT with tune cost?? Be a good idea for me to get a HP/$ spent estimate.

 

Keep in mind I have a very small 1 chamber slowmaster, lost a ton of low end with it.

 

Not bad.

I got a free coldair intake from GREEN performance that is basically identical in style to the Airraid JR setup..uses the stock airbox, sort of side-load ram air style, and comes with an upgraded air filter.

Do you think I would get a truly noticable gain going to the AF1 and fixing my tune on my xcal2 over my current intake? Or not worth the cost?

 

Great #'s man, right on par from when we have seen in all our testing.

It's hard to gauge your exact gains without a base line, but with the truck normally seeing 225-240 RWHP in stock form (many seeing even lower)you picked up some big #'s. Right in the 30-40 RWHP we have seen.

$555 complete about $15.85/HP
What does the AF1 and X-2 run?


No one mentioned the AF1??
Keep in mind you did not test this and did not get a tune from JLT. All you got was the filter set up from JLT. The power is made in the tuning and the intake flow. Don't take offence, this is just a note to make your statment clear to others. We have tested other tunes and the tunes from JLT/SCT are the best we've seen so far.

Thanks for the post of your results. Hard info is the only way to see what gains what.
Don't believe the product statments and leave it at that. JLT gains what it claims!!
Thanks
Jay

 

Thanks Jay, I have always been impressed by your products and especially the service. I am gonna tweak on the tune in the next few weeks and see if we can squeeze some more power and TQ out of this thing with the A/F a little closer to 13:1, and a tad more timing. I'll post the results when I do.

 

Looks like your trq numbers are way low after looking at them, like like 40lb/ft low. That blowmaster muffler might having something to do with loss of low end trq, but also your pretty rich. Id lean it out to around 12.8-13.0 area and see what that does.

 

I heard the Flowmaster might hurt TQ, but I love the sound over anything else out there so it's not going to be changed. But I agree, the TQ numbers will come up with a leaner A/F and a tad more timing. I didn't have a full tank of 93 and there was a slight hint of detonation, so the PCM was likely pulling some timing. Just another thing to consider here.....

 

Tucker 1154: No one mentioned the AF1??
Keep in mind you did not test this and did not get a tune from JLT. All you got was the filter set up from JLT. The power is made in the tuning and the intake flow. Don't take offence, this is just a note to make your statment clear to others. We have tested other tunes and the tunes from JLT/SCT are the best we've seen so far.

Actually I had the JLT filter and SCT tuner combo FYI! So when it comes to my statement I think I was qualified to make it. And ill say it again, The Af1/SCT in my opinion is better!

 

This thread was not about who's intake is better to be honest. I was just wanted to post real data from a dyno session so people can make their own decisions on what intake is best based on actual facts, not opinions.

 

Any thread ive read in the past has comments on both sides of the fence. Also id like to point out that when I did have the JLT on my truck I started a couple of threads praising its performance and sound. I still think it is a excellent intake and I apologize if you in any way feel I was bashing it,Truly not my intention. Your right it is just my opinion. Congrats on your numbers.

 

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.