bahahahaha I heard that story!!

Good numbers tho!

 

Do yall verify the tune up at the track? I've never had any luck with spraying on a dyno. A/F is always way off, doesn't load the motor like at the track.

 

He didn't use the wideband to tune it, Just read the plugs. From what I've seen on some of the nitrous cars red truck has tuned, he makes very few if any changes at the track. Its almost like he knows what he's doing

Maybe he'll have more input on That matter

 

I'm basing the tune off of the plugs also, just referencing it to A/F. And I've never seen it consistant coming off the dyno, we always have to make changes.

 

Man I really don't know, that's why I surround myself with people That do

This is really the first time we've got somewhat serious with the nitrous tune up on my truck. It may be a learning experience but I don't think we'll need to make any huge adjustments if any.

 

awesome numbers phantom... i wanna see some vids of this beast at the track..

 

Do you plan on going back to the dyno once you switch it over to e85? Iv got e85 a mile from my house and been thinking out switching over, id like to see what it did as far as power and how much timing you were able to put back in it.

 

i rarely pay any attention to the wide band on nitrous. Its nice to see, just to ease your mind, but usually people tend to get nervous with the a/f ratios a good tune up ends up at. When we dyno a nitrous car, we are mainly doing 2 things. Making sure that all the mechanical aspects of the vehicle are working properly and everything together will be able to provide the nitrous/fuel ratio i command with the jets. IE: Solenoids opening properly, system activation, checking for leaks, plunger shape and condition etc etc.

We only make a few nitrous pulls to make sure that its mechanically sound, and that the tune up is in the ballpark. Its alot easier to change plugs, make a quick hit in the shop, shut it off, pull all the plugs and have a look, shove new plugs in it. Make a small change or two and keep an eye on the plugs. I dont like to beat them up too much on the dyno, so once they are close, we button it up and head to the track (or mexico)......and finish the tune while watching the mph and plugs.

Makes it alot easier and cheaper to get it in the ballpark, and a 3 second dyno pull is alot safer on the first tune up than a 11-12 second pass. Or in phantoms case, a 10 second pass lol.....


We will definately be making a trip back to the shop once its on the corn. Some cars we can add a couple degrees to, and some we cant. It really depends on the combustion chamber design and cranking compression (camshaft)....in all the cars i have done, we have never gained a whole lot on e85, but its alot cheaper and easier to get than race gas, especially at 3 in the morning. Im sure he will post his results after the e85 swap. Even if it makes the same power or a touch under, its still gonna make for a more reliable nitrous tune up, and cheaper than race gas, so its a wash.

 

now im not trying to sound argumentative, but this post seems off.

Everyone says that a dyno doesnt load the motor like at the track and so when they get to the track, they have to make a bunch of changes. This is hard for me to understand, unless you are using a mustang dyno, and in that case, i totally understand.


Lets say you have a car that makes 1000 hp on the jug to the tires. Now you race that car for a year, tuning and tweaking and getting exactly what that engine wants in gear ratio, converter, tune up etc. And then during the winter you shed 400 lbs off that car. When you take it to the track, there will be nothing on the engine you need to change. Now converter, tire, gear, etc thats a different story.

The difference in the dyno to track has been minimal in my exp. UNLESS you are tuning off of air fuel ratios alone or are using a mustang dyno. There are too many inconsistencies with a wide band for me to trust one. o2 type, o2 position, header collector style, the machine that reads the o2....Just alot of things that will throw you off.

I had a collector leak on a car once, and the o2 bung was behind the collector. I was only using one o2 and it was showing CRAZY lean. At first i thought we had a noid failure or fuel issue, so we made a pass on motor and it was still crazy lean. Pulled the plugs and they looked good. So we made the decision to move the o2 bung to the other header, then it read pretty close to what it should. Did a quick smoke test, and under a pull the exhaust rushing out the pipes was scavenging air into the leak and showing not near enough fuel for what oxygen was there.......So if you tune off of plugs (the right way), you should only have to make minimal changes when you get to the track.

 

Why is the mustang dyno throwing things off? Might be a dumb ? but i was wondering.. Trying to pick up some tips here cause I soon will be running a bigger shot..