Rokktech Crank Sensor Installed...

[RKerner]

Has anybody done a before/after dyno run with one of these? With the ease of install they claim it shouldn't be tough to do. TST claims something like 15 hp from the timing advance on their box.

Butt dyno says bottom end roll-on is much improved, light throttle accel from low speeds is better. If I get around to it before blended fuel is delivered up here I'll post the results.

 

[TYCreek]

Interesting ... solve problem ??? what to solve? put the stock one back in! a slightly modified stock sensor that allows rotation to one side? all the same markings etc... a rubber ring removed and some plastic shaved from one side... The rubber ring doesn't seal anything in or out ...

#ad

 

[67guzzler]

Huh?

Ty -- What are you saying? I think I need a translator.



Excellent picture by the way.

 

[TYCreek]

Was a response without a quote to the post up away that was concerned about Rokk not responding ... within a couple days. Just a comment about how any component related issue could be resolved by putting the stock sensor back in. Also that there is really is not much to this little mod.

 

[67guzzler]

Gotcha. I was a little lost but it all makes sense now.

 

[BIG BOB]

I ordered mine online and paid through PayPal on 9/23 and received the sensor on 9/26/05. What can I say? Oo.



I'll put it in on Saturday.

 

[JRD]

ok fine, you guys made me do it, its all your fault!... darn you! :-laf

 

[MFalkinham]

I have a non-California standard output 250/460 (no CAT or 3rd injector event). Does anyone know if the Rokktech crank sensor would offer any mileage improvements with this setup? Thanks!

 

[OHale]

ok fine, you guys made me do it, its all your fault!... darn you! :-laf

I jumped on the bandwagon and ordered Sunday night. I hope the rokktech sensor is compatible with the cow magnets I use to increase mileage and horsepower... .

 

[CoastyAV8R]

I have had mine installed for a few days but can't really say I have noticed a difference between the mileage or a seat of the pants feel. Now I have only driven it to work, 10 miles each way, so I haven't driven it long enough to give an accurate feedback report. I don't drive my truck very hard so I really wouldn't notice if it has an increase in low end until I hook up the toy hauler this weekend. It seems guys who have it installed for a while have had a great results so hopefully after a little more time, I'll be able to notice the same.

 

[BHanna]

Took my first trip with the new sensor, 450 miles into Central California and 450 back. There are some big hills on the way so I know that didn't help but I got 18. 1 MPG (empty most of the way). The road pretty much goes between 2000 and 5000 feet elevation the whole way with lots of 6% grades. I was doing 65-70 most of the way, so I'm pretty happy with that mileage number.



Haven't filled up after the return yet but the overhead reads the same as it did after the first tankful. This seems to be about an extra MPG on the highway (In more hilly terrain than my previous data). The overhead shows a 2 MPG gain around town but I don't have enough in-town time to give any hand calc numbers.



The truck also seems to idle a bit smoother.

 

[thejeepdude]

Interesting ... solve problem ??? what to solve? put the stock one back in! a slightly modified stock sensor that allows rotation to one side? all the same markings etc... a rubber ring removed and some plastic shaved from one side... The rubber ring doesn't seal anything in or out ...

#ad

Can someone paintbrush this image and illustrate which way we're trying to rotate this thing to advance the timing?

 

[67guzzler]

Can someone paintbrush this image and illustrate which way we're trying to rotate this thing to advance the timing?

Sure! From this angle you're almost viewing from laying on your back looking up. From here you'd just push UP on the sensor and that would advance it. Pulling down on it would retard it.



Note the gap that the two arrows are pointing to in the attached picture. Those are the result of the sensor being pushed up advancing the timing.

 

[Matt400]

Also to advance you would rotate the sensor in the opposite direction the tone wheel is turning.

 

[F-15I Ra'am]

My Rokktech results:Had it on the truck about 3 weeks. Mileage did go up about 1 to 2 mpg. hand calc. , better low end power unloaded. However loaded truck had less power. Also loaded or unloaded it gave the truck a slight but noticible {and annoying} harmonic buzz or vibe. Took it off due to those reasons.

 

[OHale]

My Rokktech results:Had it on the truck about 3 weeks. Mileage did go up about 1 to 2 mpg. hand calc. , better low end power unloaded. However loaded truck had less power. Also loaded or unloaded it gave the truck a slight but noticible {and annoying} harmonic buzz or vibe. Took it off due to those reasons.

Very interesting. Mine is on order. I have a shortbed QC as do you. Did you try adjusting the advance? If I read the rokktech site correctly it is adjustable. I hope I get the mileage improvement without the vibration.

 

[67guzzler]

He has aftermarket intake & exhaust. Just a guess but some have complained about the Banks Monster Exhaust and harmonic buzzing even without the sensor upgrade. The sensor upgrade could have made that problem more noticeable.

 

[OHale]

He has aftermarket intake & exhaust. Just a guess but some have complained about the Banks Monster Exhaust and harmonic buzzing even without the sensor upgrade. The sensor upgrade could have made that problem more noticeable.

Ah, thanks. I'm looking forward to trying the modified sensor out. I drive mostly unloaded and seem to get mildly fouled injectors pretty regularly, even with additive. The rokktech site claims that this sensor will, among other

things, reduce injector fouling.

This has to do with less soot being produced, which allows fouled-up injectors a chance to clean-up after a few hundred miles.​

Quoted from their site.



Better mpg is a good thing too.

 

[BrianJ]

I finally bit the bullet on the sensor as well. Rokktech service was great, ordered the part online Friday and received yesterday (Wednesday). Hopefully I will get it installed this weekend.

 

[F-15I Ra'am]

Yes I have had problems with the "drone" from the Banks exhaust. Cured alot of it by completely removing the exhaust tip. The sensor most likely brought some of it back. Didnt try adjusting it, maybe when I have some time I'll reinstall and play with it some. Think I'm going get rid of the Banks exhaust first though. The loss off power towing kind of has me baffled.