I don't think it's too smart to run anything more than 2 extra pounds without a chip. Had that little problem last year when my chip wasn't making full connection and the computer didn't compensate for the 4lb pulley.

 

Hummmmm, now I have to admit that you guys are making me question the chip.

I really did believe that the chip was making up for the extra boost of the larger pulley.

I also will say that this is the second time I have seen a thread on this topic get this long and the big three just sit back and input nothing. I know they read the threads, just ask a buying question and they are on you like chicken pox.

So, the general consensus is that the factory computer makes up for extra boost.

How about the 8 lb pulley. Is there a limit on what the factory computer can do.

Maybe the 24 or so H.P. gain is NOT worth the risk...must be something to it. No tuners are disputing it with actual data.


Thanks,

Rocks

 

I stick to my statements. Running larger pulley's with no chip = disaster.

Its your motor. Just dont go crying back to ford when you blow it up. Your computer cant compensate for the extra needed fuel and when your leaning out on the upper rpm's.

 

I agree and I admit that I don't know enough about what is going on with the fuel tables, timing curves and everything else inside there, also what the tuners are doing. All I know is that my chip made much more power than not having it when I was pretty much stock. With the 4# lower and 1# upper pullies the A/F ratio was where it needed to be, and that's enough for me. I've blown more money at a craps table in one hour than what this chip costs, so to me it is not a money thing. Oh, and as I said on the first page...

All information or opinions expressed in this message are those of the author. The author accepts no responsibility for loss or damage arising from its use.

 

I would really like to see what the tuners have to say on all this.



Rocks

 

Sometimes people should go back to basics, technology is wonderful, but back in the 60's did people hook up their digital widebands to jet their carbuerators? no, they read their plugs after every jet change how did they adjust timing, by listening and turning up till they heard detonation then backing it off till it stops. I would like to see a poll started about broken rods, three choices ,broken with chip and mods , broken with pulley and no chip ,completely stock.

 

From my experience i think the computer can handle the 4lb pulley. I ran my 2000 Lightning with 90MM Mass Air and 4lb Pulley with no problems. I ran it at the track and it ran a 13.4.

I do believe that if you want to squeeze the most performance out of the pulley you should get a chip.

 

Do you have any dyno runs or on-track data logging which shows this?

In very cold weather (which don't happen here in sunny SoCal) , I could see the MAF getting pegged with a large pulley. But until someone produces data using the stock chip and 2/4/6/8 lb pullies, it's just speculation.

 

Man guys, I love this stuff. I have only been on this board for a week now and have learned so much about the L's. From what I can tell and have read on these post the Computer and Fuel Injection systems in the L's are not that much different from my T/A. The best mod that I ever bought for my car was LT1-Edit. It is a software that interfaces with the stock computer to re-flash the chips and gives the ability to do just about anything with the program.

Now with that said, has anyone ever thought about a pure Open-Loop program? I had a heads and Cam car that made 29 miles to the gallon on the highway and 20 city. This is not done by using those damn piece of crap O2 sensors. I did it all through Open-Loop. If you take the Closed Loop Temp setting and set them equal to eachother then it will never enter closed loop. Then you as the operator have complete control over the Fuel and air ratios. That way you dont have to depend on the computer to make adjustments, it will stick to what it knows. Down low, say at cruising load (no load really) you can lean the crap out of it and get good gas mileage, the you can tune with boost, using mainly the RPM based table, since blowers are RPM dependent.

It worked great for me, when I put the turbo on the car this all went to hell, but turbos dont build boost in realtion to RPM. Does anyone produce software like this? I know there is something, because the tuners use it to burn the chips. I would just like to if anything get some screen shots of the software used. Just to maybe relate it to some stuff that I have done in the past.

To clarify, I am not looking for something that is like the Hypertech power Programmer, those things suck, but something that shows all the computers parameters, and what all data it uses. Please let me know.

Jason

 

Well Tim, bring your truck down to Orange County and ill use it as a Guiena Pig and give you real world data

Ill take it down to Superior Automotive , slap on a 2,4,6 ,8 and 10# pulley and give you power,tq and AF ratio's. Then i will take it one step further and give you mobile wideband results @ WOT on a 5% grade in La Habra.

Doesnt get any more factual data then that. However, i sure as hell wouldnt be using my truck for this. Who's game?

You guys sure put a lot of faith into the factory trim tables...

 

Boy some people really have so much to say with no #s to back them up.They take the tuners word or (lack of word in this thread)) as gospel.It is a fact that MORE trucks have blown up with chips than without......................They will stick by their tuners mail order chip till they die.............

Im so sick of these people saying a pullied truck is gonna blow without a chip yet no one has yet blown up.............I can name more than a hanful of each's tuners trucks that have blown to smitherines..........

Im sure that a chiped/pullys truck is faster than just pully but NOBODY has proved its safer.All you tuner lovers cant see the big picture.Your tuner is not even here backing you up!!!!!They have plenty of time to tell us about new products but cannot tell us the truth in fear of possibly losing sales?????Just the facts Maaam

 

Naturally Asp motors are a lot more forgiving on tuning then Forced Inducted motors. There is already an option for us like the LS1 edit program you talk about. Its called MAFterburner.

The problem with relying on open loop mode is that its at WOT.. At that point, it ignores whatever the 02 sensors read anyhow. This is where banks 3 & 4 inside the EEV-5 come into play with extended fuel trim parameters. What becomes dangerous is HOPING the computer knows where we are lean. Upper RPM fuel starvation is just as dangerous as inaudible detonation. 2 Killers for our motors. Generally, this is where your plugs begin to melt, holes in your pistons occur and rods exiting stage left.

I guess people are freaked out about having a chip and then trying to get warranty work done. In a way i dont blame them, but why attempt to place a 4-6# on there without a chip? Its one hell of a gamble.

Lastly.. Just because your AF looks ok on the dyno, doesnt mean its ok for the street. Remember that a Dynojet only supports 1600 lb load. Your truck is nearly 5000 pounds. Your AF can jump up to one full point off the dyno to real world street conditions. Something else to consider.

 

JEEEEZ,With all your replys one would think your an expert.Would you like to enlighten some of us with some #s to back your statements?? .Im sure you have had your truck on a dyno right??
No flame just curios

 

LT1 Edit isn't like the Mafterburner. The LT1 edit software let's you adjust much more variables, much like a chip in our trucks. LT1 Edit Info
I haven't seen a good reason for a Mafterburner in our trucks yet? Anyone running one?

 

Theres the Mafterburner Plus which allows you to do a lot more parameter changes...

Mafterburner works great on mustangs, not so well with Lightnings. You could always invest in a mobile wideband and twEECer setup for the L.