Ok, first off I absolutely love my smarty and the truck runs awesome. I have been running pretty much daily on level sw5 and it is great. A couple weeks ago I decided to try sw7 and the power feels great, but I have noticed a few things I need opinions on.

1st. If I pull away from a stop light and give it a decent amount of pedal, the rpm's go to about 1600 and then an instant jump to about 1900. I can actually see the tach do it and I can feel it in the truck. If i pull away normal, the truck runs fine and the rpms come up smoothly and so does the power.

anyone have this? what is the deal?

2nd. regardless if I pull away slowly or fast at some point (it varies some) above 2200 or so the power actually seems to flucuate. I can see that on the tach and feel it as well. almost like I am in and out of the throttle. I am not talking about as I keep pushing the pedal down. It is actually when I get the pedal to the spot I want, the rpms continue to climb and then the flucuation starts.

what could that be?

I have no other mods except for gauges, exhaust, and amsoil air filter. surely it can't be fuel related could it? I am not talking about WOT here at all.

I may try sw9 if I get time to see if it does it. I just no that it doesn't on sw5 or if it is, it isn't as noticeable. I am running ver 405a 205 I believe.

thanks guys

 

could the jump in rpm be the transmission??

you might think twice about sw9 from what i've heard, sw9 + stock tranny = dead tranny...

 

I thought thast maybe it was, but it just seems to be too consistent. Hard to explain, but I am positive it isn't the tranny.

I understand the sw9 and tranny thing. tranny isn't totally stock and I think alot has to do with the way folks drive. i don't do boost launches and I don't even mat it to the floor until I have some line pressure built up or the tranny has the converter locked.

thanks

 

I agree with the tranny and #9 and driving. I have mine on #9 mp-8 on 40% and an Aurora 5k turbo and haven't hurt anything yet I have felt it slip once on a 50 psi run but other than than if your not doing 12 psi boosted launched at every stoplight and your smart you goona be ok. Not saying mine won't blow i expect it to at some point but I am not trying too!!

I have felt the same things your talking about but it only varies 100-150 rpms and I don't know if it just because the throttle is so touchy or what not??

Shane

 

My Smarty has done this before also. I'm trying to catch the tach on video and pick up the audio to send Marco, hopefully they can see & hear what is happening.

Instead of smooth, linear power, the upper rpm range comes on in cycles, probably about two or three per second. Still lots of extra power, but it surges its way up to redline.

 

Tranny, lack of lift pump, and just the SHEAR LOW END SMARTY POWER are all causing what your explaining.

It is not the Smarty's programing...

 

I agree, it just sounds like it is running out of fuel, then catching up, then draining again ect... even SW7 is way too much for a stock tranny. My truck would drop fuel pressure to 0psi with the Smarty on just SW3 before the FASS. If you plan on running Smarty above SW3 you better have some mods to utilize and hold it.

 

X2!!!On that!!

 

Thats the exact symptom.

I hear you guys about the tranny. I understand, thats not what this post is about. When the tranny brakes or as soon as I get time, I will rebuild it with good components. Again, I am not launching hard or for that matter even smashing the pedal to the floor.

Fuel, maybe I guess. I have talked to Bob once and he didn't think that was it. if it was under a hard full throttle run, then maybe so, but it itsn't. I will get a fuel gauge in it sometime soon and watch the pressure. Fuel system will get upgraded as well as tranny for sure when I get back from Iraq this time. Just didn't notice anything unil I went to sw7.

if yours went to 0 on sw3 then it very well could be fuel.

thanks

 

Definitely sounds like fueling to me.

 

Yep, it would do that same surge issue you got. Installed the FASS and I have nothing but smooth power

 

Agreed. I really need to stop the addictive acceleration with the Smarty on SW 5+ without the pump & tranny upgrades.
I can feel a little bit of my stock tranny die every time I jump on it

 

On your second point - It could also be the wastegate opening. That will keep a stock turbo from spooling beyond safe limits. That is what I notice at level 3 (The highest level I have run) when the turbo is singing and the rpm's get up there. If the Quadzilla boost fooler applies to the 04, that may help.

 

mine does it too!! on sw7... It just the tranny down shifting because the ecu is fine the optimal tq range for you acceleration...never good to half edited by admin the gas peddle with extra hp, it eats up the tranny...cause it cant figure out what it wants to do. Aslong as it doesnt do it at 100% throttle you should be good. If its Jumping around a 100% throttle, than you probly have some tranny issues.....IMO!

 

Thanks guys.

I went back to sw5 and it does none of the above. It isn't the tranny that is 100% for sure. My first point, the one being about the sudden jump is before it ever shifts to second so there is no downshifting. As far as edited by admin the pedal, well that depends on how you have your line pressure. Not new to the tranny world.

when it is surging if it was the tranny, the way mty valve body is setup, I would know it. This is even when in lock-up. I am starting to think it probably is fuel related. For now, back to SW5 and no worries.

thanks