Injectioneering YZ450 throttle body modification review

24 replies to this topic
  • gofaster450

Posted June 17, 2013 - 04:21 PM


As a follow up to my original post, I finally got a chance to ride my bike after the Injectioneering mod. Before riding I reinstalled the stock throttle tube (initially had the G2 throttle tamer) and the stock 2012 tune. My main objective was to reduce or eliminate the whiskey throttle nature of the bike and for this the mod was a success. Throttle response was every bit as responsive as stock but with much better control from 0-1/8th throttle.

The bike started better hot and cold.
The bike didn't flame out once. Before the mod I could count on at least one flame out per ride and then a kick fest to get restarted. Not so with the injectioneering modified TB.
The bike ran hard. So hard that I installed the "off road" tune after the 30 minutes of riding. Through out the rev range the bike felt stronger but was easier to lug.

It was after I went to the off road tune that I realized how much of a difference the way the power was put down with the different tunes affected the way the bike handled. With the stock tune the front end was light even with the engine relocate. With the off road tune the bike didn't try to tote the front wheel with every twist of the grip and added a composure that I didn't notice before the mod. Stock it pulled hard but not this hard.

I love this bike for the off road riding I am doing now. It may not be the most up to date for motocross but off road this bike is killer. The Injectioneering mod was well worth the effort, money and time invested.

  • geshields

Posted June 25, 2013 - 07:35 PM


I gotta say, I am loving this modification! I raced this past weekend and felt real comfortable with the bike and the way the power was delivered. I love power but it was hard to control the throttle coming out of a turn, especially when the track dried out or was real slick right after they watered. This just gives you the confidence to twist the throttle coming out of a turn because you know it won't be abrupt.

I would definitely say this mod is well worth the money spent. Even for MX racing!

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • ka24s14am

Posted June 27, 2013 - 07:30 AM


I think I am sold. As soon as my yz250smokey is back together my throttle body is coming off. Thanks for the reviews guys

  • mxbrewski

Posted June 27, 2013 - 11:36 AM


Although I have not got to ride with my Injectioneering modified throttle body, I have to say that dealing with the owner of Injectioneering, Wade Wilcox, was a pleasure. The work was completed in the time frame he said, and there were no problems what so ever. If you are considering this mod I would recommend him without reservation. Also I was able to take my bike for a lil putt around, and it has lost that initial jerk when cracking open the throttle and appears to have enhanced the initial response of the powerband like gofaster450 said. Looking forward to getting out on the MX track, as I also put the Steahly 9 oz. flywheel in it too.

  • ka24s14am

Posted June 27, 2013 - 12:13 PM


Sounds just like what I am looking for. Thanks. Ill post my review when I get it done. I bent a shift fork and took out the transmission in my yz250. So when its fixed Ill be riding it while the 450s throttle body is getting worked on.

Related Content


2016 YZ450 by CaptainKnobby

Dirt Bike   Dirt Bike Technical Forums   Suspension
  • Hot  59 replies

Megabomb Fitment by 288yz450

Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • 1 reply

Snake pit oct 30th by The Anvil

Dirt Bike   Dirt Bike Regional Discussion   California
  • Hot  293 replies

Should I buy this bike? help....... by Numsa Hul

Dirt Bike   General Dirt Bike Forums   What bike should I buy?
  • * * * * *
  • 10 replies

James Stewart back on a YZ450F by YamaLink

Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  47 replies

Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.