Idiot Tuner strikes again!

[ALIENHITCHHIKER]

Back in Februaury I installed GS intake tubes on my '00 R1100RT and posted my glowing impressions - roarty, growling torque meister, blah, blah, blah.

Being the sort who can never leave well enough alone I reinstalled the stock tubes yesterday (4,300 miles later). You know what? I think I like the stockers better (for now anyway).

What I found is that the GS tubes:
~ have a roarty intake honk
~ do seem to improve torgue in the 2500-3800 range (this is all seat of the pants, mind you)
~ definitely - on my bike with a moderately tuned Techlusion R259 & Denso IK22 plugs - create a flat spot at about 3800 - 4000 rpm, from which it emerges during acceleration with a nice power hit.

Now you ask, "So, what's the big deal?"

~ the intake honk got old - in the end I prefer quieter
~ the power curve is more linear with the stock tubes - makes for smoother roll-ons
~ and finally - this one is more subtle - the engine seems to rev more willingly, & cleaner, with the stockers. I find myself spending more time in the 5000rpm neighborhood instead of the 3500 one. Strictly a matter of personal preference, but at 5000 there is definitely more immediately available power should you find a need to hustle a bit.

I know that the flat spot with the GS tubes is counter to the available dyno results. My theory is that the Techlusion corrected the torgue dip & when then combined with the more restrictive GS tubes actually results in an overly rich condition during hard acceleration.

Comments? Thoughts? 's?

Steve

[ALIENHITCHHIKER]

Well Steve, this is certainly a fascinating thread. I'll help you keep it from withering on the vine and slipping into oblivion.

Your secret admirer (Gosh, you ARE a handsome guy).

[LORAZEPAM]

Interesting post Steve. I have been wanting to try the GS tubes for a while, it seems to be a popular modification over on the RS forum. Most folks really like the improvement it brings. I wonder if the techlusion did change what putting them on does for a stock bike.

[jdiaz]

RobL suggested the GS intake tubes to most of us RS folks back in the day, because the RS had tall final drive gearing and didn't have great midrange roll-on like the RT. I owned both an RS and an RT at the time, and thought I would try 'em.

I bought a set and installed them on the RS. And hated the effect.....they killed the top-end hook that I liked on the RS engine and also sounded "boomy." I didn't even bother trying them on my RT, and sold them the next week.

[dano]

I had contemplated installing GS tubes at one point on my RT, but never got around to it. Kinda glad that I didn't..........

[ALIENHITCHHIKER]

Gee guys, you make me feel like I actually started an intelligent, provocative thread. (It might be dangerous to encourage me)

Beers all around if you make it to Lima. And for my secret admirer; two beers!

Ya'll look for me if you make it to the beer tent - I'm easy to recognize - I'll be the guy who looks like an idiot.

Oh yeah, I'll also be riding a BMW.

Steve