I just installed the Apexi this morning, and after test driving at all speeds and WOT, no doubt the Hemi runs smoother, quieter, thorttle response is better, and I can't tell at all when MDS is on now. At slow speeds around 30 under light throttle when MDS is on, it responds instantly with no hestiations nowm and for some reason, the trans seems to shift better too. I expect mpg will improve also. Mounted it up on drivers side, just in front of the brake master cylinder, took 30 minutes or so. http://importperformanceparts.net/imports/apexi-groundstable.html
Ok..well after researching all these voltage stabilisers I went with a Japanese one and a 5 wire grounding kit on my 05 WH 5.7 Limited.
I drove a 1400km trip with a best mileage of 12.8L per 100km. Fitted everything at my mates shop and drove it in town for the week then to Sydney and 1200km back home.
After the trip my fuel average was at 11.6L per 100.. But the smoothness at idle and thruout the rev range, less noticeable hesitation when mds is active, and throttle response during mds activation and when coming out of it has me convinced there's definitely something to it. Overall the hemi feels much more refined, more like the LS motors I'm used to building. I'm a +1 for giving it a shot...
Probably just the grounding kit. I just don't see any way an electronic device that you ground from positive will do anything to an electrical system other than slowly drain itm
I'm guessing it's basically a smoothing capacitor. It completely blocks any DC so won't drain the battery but it will short out any high frequency AC interference. This filtering is usually done in the supply side of the circuitry anyway. Too bad if the capacitor blows and shorts your battery.
Wouldn't that only be beneficial if the power being filtered was the supply for the rest of the vehicle? The instructions for the ebay rigs say power to ground.. so whatever you just filtered is grounded anyway..
This was probably the biggest reason why I was very skeptical. I'm not an electrical engineer, I only have a basic understanding of circuits. I took the unit apart before install, the inside revealed a circuit board connected to an LED, also with a capacitor, a bunch of resistors, and (for lack of better understanding) some type of processor.
I was always sort of embarassed at all the ticking/clicking noises from this Hemi, even just at idle. My goal with this device was to (at very least) quiet the electrical noise from the 5.7 Hemi. This device appears to have succeeded in that, by making my engine run smoother and quieter, than before the install. (still have not installed the grounding kit) The engine also appears to start better in the mornings. I will comment that I have seen no significant difference in the mpg.
Bit the bullet and ordered the Mega Raizin kit with grounding cables today. The seller is guaranteeing the authenticity of the product, but I'll make sure to check all the features to make sure upon receipt. Will report back upon install.
Installed mine yesterday. Had to disconnect the battery to do it, so it reset the PCM too. That being noted, after driving for some time, when MDS re-learned my driving patterns, the engagement/un-engagement is definitely smoother. I when I installed the Mega Raizin, I installed 2 additional grounding cables, and will be installing an additional one when I get a bit more time. The unit is grounded to both the body and the TB now, and will later be connected to the alternator for more grounding. The kit came with 5 8GA wires of varying lengths to ground to the unit, so I'll likely be eventually adding them all.
Haven't driven enough to make a mpg estimate, however, along with the smoother MDS shifting, acceleration seems less jumpy too.
Will update in a couple weeks to rule out the reset of the PCM as causing all of these benefits. :thumbsup:
I don't believe that the 3.7L is DBW but I could be wrong. That being said, I suppose it could regulate the normal voltage fluctuations at your battery, but you don't have systems like MDS that need extra help from the voltage regulations.
What is the price of one of these. I'm seeing pretty big price discrepancies between the ones I've found on Google. They're ranging from 35 -120 dollars. The most expensive being on site for Pivot Motorsports. Not really sure how to tell a legit one from a fake.
No one is "really" sure on how to tell a real from a fake one. I wasn't going to pay the massively inflated price on the Pivot site, so I found a seller on eBay who guaranteed me the authentic product. Two years ago, these products were all sub-$100. It seems that they all cycle in price as the internet hypes them and then they fade away again. No one even knows if they provide benefit. For the price I paid, it's well worth the peace of mind.
This product conforms to the pivot's website regarding authenticity, but doesn't conform to several reviews versions of authenticity around the web.
For example, the product packaging on mine had the "glowing" logo but all the other packaging matched. Additionally, all the hardware looked legit, including markings and coloration of cables except for the LCD unit. My unit had one display unit, versus the authentic which supposedly has 3. However, mine actually turns on and shuts off within the minute timeframe. At this point, I could care less whether its legit or not. Seems to be doing a good job; after all, it's really just a set of capacitors and grounding cables.
I think I walked away for like $55 shipped if I remember correctly. :thumbsup:
As an update, I've noticed several improvements which can no longer be attributed to my rest computer due to battery disconnect.
The throttle response is definitely slightly improved compared to before.
My voltmeter is registering at least a constant 14v now, even with my amp/sub switched on. Typically, when not driving on the highway, the voltmeter would run down to 13.3v-ish inside the city when the amp/sub was engaged.
No difference in audio clarity.
No discernable difference in mpg, but I drive aggressively and mostly inside the city.
Note: some of these performance improvements (not the electrical ones) might be attributable to the Challenger IAT sensor installation, which I did simultaneously.l
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Related Threads
?
?
?
?
?
Jeep Garage - Jeep Forum
1.7M posts
176.2K members
Since 2009
Jeep Garage is where you can talk about all your favorite jeeps including the Cherokee, Liberty and Grand Cherokee.