snave8

Thinking of installing the Riva stage I kit on my 2011 RXT iS (ECU overide, different impeller and some breathiong mods)
After break-in it's running 68 MPH.
Riva claims a 4-5 mph increase........Anyone out there have any experience with this kit on a 260hp RXT?

Mark

Arctic

I think no matter what you're going to have to override the GPS speed limiter so you might as well buy that module and see if thats enough speed for ya. It's $250 from 4 tec performance

snave8

I spoke with Riva tech support........There is currently no way to overide the ECU in the iS model.
Guess I'll just wait.

Arctic

Meaning it won't go any faster no matter what?

snave8

Riva told me that (at this point) they can make it go quicker, but the top speed would be limited by the computer (ECU?)
He said in about 90 days they'll have a "fix" for the iS models.

crazybob

I did the exact mods and only picked up 1 mph on 2010 rxt-x

ryanr623

I've heard of others being disappointed as well.

snave8

After breaking it in over the weekend, I'm getting 69 mph on the GPS......Which I can live with.

Outlaw

Be very Happy with that. The RXT-is is heavier than the RXT-X due to the suspension weight. Also don't tow a tube with that. My dealer told me they aren't supposed to tow tubes or skiers due to the suspension.

Hey CrazyBob you ready to race the RXT?

__________________
2006 RXT with RIVA STAGE THREE KIT 295 HP

2009 RXT-IS 255 HP

2008 GTX 215 HP



Land Rocket - 2003 Z06 Corvette, Chevy

Arctic

Everybody likes 69! actually I WISH mine went that fast