Mike D

This weekend we had a dyno/rained out drag event . A member from our club was there to base line his son's truck. The truck was a 1999 with about 170,000 on the clock with a healthy fuel system and new injector pump.

With the Smarty #9 the truck dynoed 201/481

No Smarty, stock the truck dynoed 193/381

So the truck gained 8 hp and 100 ftlbs of torque.


This was done at Wayne's Dynojet in Jacksonville, NC

BobQ

How can that be?????

My truck moves on sw9?

Bob

CTD_Neil

Hmmmm? That's all?

Tiger Rag

Torque is moving it.

My truck has injectors that are 65-70 hp over what I used to have and twin turbo's that I didn't have before and a Smarty. Dyno #'s went up a little over 60 hp and tq stayed about the same from my last dyno. What I can tell you that doesn't show up on the dyno is it makes a BIG difference in acceleration and towing. It is a great product, just not necessarily a great tool for a big dyno #. It makes its best dividends in the 1/4 mile in my opinion. I'm not saying I have a fast truck, I don't. But it is WAY, WAY, quicker than it was without it.

Don't fret on the dyno #'s, it is about the street performance.

I do have to say I was surprised that my torque # stayed about the same. I thought the Smarty would make that jump.....ah who cares, I can feel what it does for my truck.

graphitecumnz

hmmmm.... numbers sound really fishy.... my truck feels stronger with the Smarty than it ever did with the EZ. I'll be on a dyno this next weekend so we shall see.... we're gonna run my truck and then we're going to experiment with the 550+hp 24V sled truck...

Mike D

What's fishy??? I hope I'm not misreading your post. There's no BS going on with these numbers. The owner of the truck is in Marine boot camp, his dad was getting a base number on his truck. I asked him as a favor to let me download the Smarty for a dyno run.

Crimedog

I think the reason you guys are feeling a larger seat-of-pants vs. dyno # is that the smarty is broadening the powerband. Sure the max was only 8 more horsepower, but how often is your engine at peak RPM? If you're spending 800 RPM in the upper 80% of your HP curve, you'll feel a lot faster than spending 400 RPM there.

Tiger Rag

Well, hopefully he's not accusing you of making something up Mike. I think he is saying something isn't exactly right because of the the results he's seen. BTW, Graphite, Mike isn't trying to pull anything, he owns a Smarty, and is proponent. He loaded it in my truck and got me hooked.......Yikes, that was easy. Anyway, Graphite could actually be on to something. I know that the owners Dad who dyno'd it said there was some tranny work in the trucks future, so I think it very well could be losing power in the drive train. I know I loaded my Smarty in another guys truck to try and he said he liked his EZ better. Well, I rode with him and I can tell you that his PRNDL was slipping badly. I don't think we felt anything close to what the truck would do if he had a healthy auto. I think that was what this truck experienced on the dyno to some degree........well, hmmmm, after it locks up though......it's not going to slip in high gear is it.........hmmmm, I don't understand the auto's too well. Maybe someone else can answer that.

Of course, it doens't answer why I only got 60 hp gain and slight Tq loss with the addition of twins, smarty, bigger inj, and a TST?.... Ah heck, who can be upset though, I hit the 450 hp barrier I was aiming for...just thought I might do a little more.

Sorry for the rambling, I'm getting tired. Better get in the rack.

graphitecumnz

Mike, completely misreading my post. I'm not discrediting your numbers, it just seems as though you should've seen better results with the mod than 8 hp... from my experience and nearly every post I've read about the Smarty, it seems as though 8 hp is a really low gain. SOP dyno tells me it's at least comparable with the EZ I was running and I made 260hp on a dead injection pump with the EZ alone. Maybe the dyno charts tell the whole story.. makes peak horsepower early in the RPM's and holds that level....

Sixpack

BINGO!

Mike D

Let me start of by saying sorry for the confussion, you know how the internet can cross wires in a conversation.

The trans has nothing to do with the dyno numbers. I don't expect TigerRag to know this as he has a six speed. I don't care if you have a DTT or Goerend or Suncoast, once the truck is in lockup it doesn't matter, the converter is locked. If you dyno a stock truck, you have to start the dyno run at about 70 mph so it won't kick out of lock up, this was done.

Sixpack

As I understand it (not a tranny guru here) lockup is also clutches. IF they start slipping that will skew the dyno #'s. Just thinking out loud.....

oestreich84

So the question is: will a stock torque converter clutch hold 500 torque? I guess it could have been slipping, and that is why the HP number was low.

Mike D

Guys, The Smarty was never touted as a HP/TQ programer. From my understanding the stock ECM has "ramps/steps" programed into the fueling curve. You have to have x amount of pedal input/apply to get x amount of fueling. What the Smarty does is modify these ramps/steps so the fuel comes in at an earlier time, thus giving you better responce down low. I think this is also why some of us experience problems when getting out of the fuel on #9, surge in power.

Marco will correct me if I wrong.

I think everyone is fixated on the hp number. The truck gained 100 FTlbs of torque. Usually hp is about half of the torque reading, so I don't know why it only gained 8 hp????

Ponci

What was your boost and pyro numbers? stock vs smarty on 9. I would bet your boost was low and your pyro temps were high. No boost fooler/ fitting.