Rich Klein

Fast service and now my bike runs better than ever, how cool is that!?! 😎👍

Patrick Baker

This is the third top end kit I’ve bought from South Bay! I love the organized packaging, fast shipping, reasonable pricing and knowing that I’m spending my money with a local, hard working family that are part of the sport!

Patrick Baker

This is the third top end kit I’ve bought from South Bay! I love the organized packaging, fast shipping, reasonable pricing and knowing that I’m spending my money with a local, hard working family that are part of the sport!

Seth Davis

Great product. Shipped it out and within 4 days got my ecu back. Love the tune lots of power. They also gave me a sucker🤣

Craig Villacorte

Awesome product well engineered thanks! Steve! Well done

Craig Villacorte

Awesome product well engineered thanks! Steve! Well done

Kyle

This kit was worth every penny and was the best $ I've spent on a bike other than suspension. As TSP mentions, the factory tune on these TBI's are just OK and their cylinder head with tune really does make the bike feel like a 280. My XC-W had a real blubbery feeling down low and at part throttle. That is now gone and on the green map the bike runs like a scalded ape. The soft white map is perfect for slower single track and what not, but still feels worlds better than the stock white map. I have to say it is now the cleanest running smoker I've ever ridden. I also highly recommend going the ERM route versus the mail in ECU flash as it avoids downtime and the ERM has so many other useful features. It's a gauge monitor, trouble code reader, can reset the TPMS and it's obviously a handheld tuner. Highly, highly recommend this kit! The service from Steve at South Bay was awesome as well. If you have any questions, don't hesitate to ask them!

matt tuell

I was skeptical but it really made a difference with Low RPM grunt. Very happy and love the fast shipping like always.

matt tuell

I was skeptical but it really made a difference with Low RPM grunt. Very happy and love the fast shipping like always.

Gary Barr

I have been running the TSP low compression head in extreme type terrain and was very happy with it. Lately though I’ve gone back to doing some hare scrambles and was looking for a little more low end hit so I gave the medium compression insert a try. Just what I was looking for but still smooth enough for the nasty stuff. Very happy with it and love the option of going back and forth with both inserts.