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Joesvo
Reviewed in the United States on August 18, 2023
Had a bit of difficulty getting the throttle wiring past the firewall in my 2016 SHO, but once I did, I can feel the difference in power. I do not have easy access to a dyno, but based on the difference in feel, I would estimate conservatively that it has added at least 60-70 HP and I am hitting 0-60 in 4.5 second range.Next step is to find a tuner who can suggest inexpensive mods to get me near sub 4...
Customer
Reviewed in the United States on July 10, 2021
You can’t use it at 100 percent. You just dial it up a bit until it starts to misfire then back off a bit. Every truck is different I was told.
N Lott
Reviewed in the United States on December 25, 2021
Truck : 2013 ecoboost Ford F-150. My son install the JMS himself, and check engine light is on and there is a lag in acceleration after pressing the gas pedal. He uninstalled product, and reinstalled factory components. Truck then was normal, as before the JMS install. When he Reinstall JMS , and double checked plugs , and all connections, the same thing happened. When pressing the gas pedal , there is a time lag before truck starts to accelerate,? Any thoughts JMS? I will be calling customer service, after the holidays , during regular business hours to discuss the issue. And may have to return
Mr H
Reviewed in Canada on July 7, 2019
I installed this 2017 Explorer Sport, 3.5 ecoboost engine. Before installing JMS Boostmax, turbo lag was barely noticeable. After installation it was very evident and my 0-60 times were consistently around 1.5 seconds slower than stock. I tried it with 89 and 91 octane and the results were the same, always slower than stock. I didn't see any gains in performance or fuel mileage. It looks good but doesn't work as advertised.Installation took a couple of hours, hardest part being getting the wiring though the firewall. Total waste of time and money.
natester
Reviewed in the United States on March 31, 2018
Works great. There is a HUGE power difference. I bought the pedalmax to go along with this. I did a lot of research before I bought it. Watched some videos showing that it delivered around 100 horses and 100 foot pounds of torque at the wheels, and it is absolutely true. This really woke my F150 ecoboost up. It's fast and powerful. I haven't seen any mpg gain from it though. I do have a heavy foot though so not sure if it would get better gas mileage with somebody who doesn't. Only issue I have is that after I put this on my truck, the cruise control quit working. Don't know if it was this or the pedalmax causing it. Gonna contact JMS this week and see if I can figure something out with it. This is a great buy though. I don't regret it.
Silly4Lilly
Reviewed in the United States on December 28, 2018
Just installed on 2013 explorer 3.5 Ecoboost. Wow seriously huge difference with 93 octane!! Like night and day! 100% amazing. Drives like a completely different truck. No engine lights...easy install!Highly recommend!
BJ WILSON
Reviewed in the United States on October 28, 2018
Really noticeable increase on turbo output
John Siegfried
Reviewed in the United States on October 30, 2017
So far so good. Nice easy install and great instructions. Hope it doesn't blow my turbos up too quick
chris. t.
Reviewed in the United States on February 9, 2015
All I can say is WOW!! This $300 ad on gave a lot of extra power to my 2014 f150. I can notice boost lag with this product now that the turbos spool up to a higher psi. When the turbos kick in watch out, the truck just takes off. Not noticeable at take off until about 3k RPM. During highway speeds its just right, let the transmission kick down a gear & hold on. I have noticed about a 1 mpg difference better using this product. I liked this product better than the programmers only because there is no re flash of the computer. Overall it took less than 30 minutes to install & well worth the money. JMS gives you the boost knob & the little red chip for 87 octane. I installed the knob with the intent to run 93 octane & turn the boost up to 100%. Honestly I am running it now on 87 octane, boost @ 100%, & have not heard any detonation from the motor. The transmission in normal mode (not tow mode) keeps the RPM's low enough not to cause detonation on 87 octane. I'm not looking to race this truck but I must say there is a big noticable difference in power during everyday driving. I have put about a 1k miles on the truck since I installed the product & have not had any mechical issues (check engine lights) yet. Would highly recommend!!
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