Ha, yeah. With product reviews, one just needs to throw out the very highs and lows and find the average of the reviews that may be based somewhat in reality.
As said in my previous post, I didn't really notice much, if any, increase by way of just adding the tuner. I suppose I didn't completely do my homework on the bullet box tuners as I was of the belief you could possibly subtract fuel as well. The bullet box tuners only have the ability to add fuel, not take away, but where I ride it is preferred to have the ability to add or subtract fuel. I suspect most would not find it advantageous to have the ability to add and subtract fuel. With my previous Grizzly, I had a Dynatek FI tuner where it was controlled by potentiometers, so it did allow for independent addition or subtraction of fueling in the 3 throttle positions. I just assumed the standard bullet boxes (like EHS uses) did the same, they don't. Like I said, I didn't do my homework but have come to find out, that information is not readily available as the majority interested in tuners are because of lean conditions. I was also led to believe the bullet box basic tune would be good for my elevation. Wrong. I have had to make pretty significant adjustments to lessen the fueling the bullet box is adding but am glad I have the bullet box because there are certain throttle positions where fuel should be slightly increased from OEM settings. BTW, I do have everything OEM concerning the exhaust and only recently have gone to a modified airbox lid. I do have an AFR Wideband meter installed so I can instantly confirm what my burn ratio is, under load, all throttle positions, on the trails I ride.
As I just mentioned, I recently added the EHS racing lid for the 2007-2015 Grizzly 700/550. The bad; there is increased noise just above low throttle input but I can't say it is as bad as changing out to an aftermarket slip-on exhaust. Comparison for the increase in noise is when I added a HMF Swamp exhaust with quiet core to my 07 Grizzly. At one point, I also added a knock-off 2R tip to the 07 OEM exhaust, but I removed that as the noise increase, for me, was unacceptable on all day rides. The good; it does seem to be allowing for an increase in intake air because I have seen my burn ratio increase from just above the low throttle position. When I say increase, what I am referring to is because of the increased air, now my monitored burn ratio (by way of the AFR wideband meter) is reading in the high 12's to low 13's where before I would see 11's, slightly on the rich side and not an optimal burn ratio for non-ethanol fuel. I consider the increased AFR a good behavior and one I was hoping for since I do not currently have a way to reduce fueling. Do I get a seat-of-the-pants increase? I do feel the hp has a slight increase. Is it worth the money buying the racing lid? For me I would say yes but I have a specific use case I was trying to address based on the FI tuner I already spent money on. For others, that would be a decision you would need to make.
BTW, I went ahead and purchased the complete EHS racing lid as I wanted the ability to switch back to the OEM lid in the event I ended up on a trip where I would be riding at a much lower elevation. EHS sells a kit to modify your current airbox lid or one can purchase the completed lid. As per riding at lower elevations, Moab comes to mind where it is about 3500-4000 feet on average. Last week I was riding anywhere from 7000 up to 12,000 feet which is pretty typical for where I ride. I also plow snow at 8000 feet, my house. So if I go somewhere lower in elevation, I may just put the OEM airbox lid back on while there... add fueling if needed.
