Smokeless performance tune?

[rammertide07]

Is it possible to get "140hp" or "100hp/120hp" withought all the smoke? I like the power, and I do like the smoke most of the time. But sometimes I'd like to be able to drive around with the performance without people waving at me with one finger.

Just curious because I was watching that Banks Sidewinder on youtube the other day and they say it doesn't make any excess smoke because it burns all the fuel they put in it.

[rammertide07]

.........

[cleatus12r]

5 minutes....patience, young grasshopper.

More power takes more fuel. Simple as that.

Without the airflow, it's just going to smoke.

Run the 100P tune and you'll get the same power with a little less smoke on the bottom.

The 120 and 140 HP tunes for the 7.3L cannot fuel any more than the 100 up top.........and the injectors cannot supply enough fuel for more than about 100 or so HP above stock. The higher-hp tunes simply overfuel on the bottom end.

[rammertide07]

5 minutes....patience, young grasshopper.


I posted on the wrong thread...didn't know how to delete it so I just dotted it out.

I get it now. There is less boost on bottom end to help burn the extra fuel. Boost picks up and smoke goes away. Thanks:thumbs up yellow:

[cleatus12r]

Not to mention that Gale Banks Engineering likes to use ridiculous amounts of nitrous oxide as well........

That stuff clears up smoke nicely.

[rammertide07]

Hahaha

[dietoremain]

lol i had the same 'problem' the other day, but honestly if you are careful you wont get much smoke n still go, on my other hand the other day i was in 100 performance and was braking to stop at a light, it turned green(i was goin about 20mph) and i just sorta stepped on it, my bad cuz i smoked out a mini van and the guy SWERVED lanes not to get smoked on, LOL!!!!!!! I was laughing out loud for a bit about that one.. oops.

[rammertide07]

Yea I know, I've seen peolpe swerve to miss some smoke. Like its gonna hurt them or their car to go through it. They'ed rather my a stunt driver move to miss some smoke and take a bigger chance wrecking.

[Pocket]

I'll be smog testing my truck this week since it's due in order to renew my registration this month. My goal is over 300 rwhp on stock injectors and stock HPOP, and still pass Colorado emissions with the same tune.

Results will be posted, win or lose.

[Pocket]

Well, good news is I passed emissions. And surprisingly, I passed with flying colors. In fact, the numbers were slightly better than last year running on a bone stock tune.

Bad news is the guys at the shop were too backed up to let me make some dyno runs. So I have set up a session with them first thing Wednesday morning before they start getting customers in the shop.

Anyway, opacity numbers on the lug down test:

60 mph - 5% opacity
50 mph - 3% opacity
40 mph - 14% opacity
zero shift - 1% opacity

Last year the 60 mph opacity level was something like 10 or 12%, with the other numbers about the same.

This is with stock injectors, stock HPOP, regulated return, intake, exhaust, and 38R turbo. Guys at the shop were pretty impressed with how clean it ran and how much power it put out when they were driving it around the shop.

[cj45lc]

Hey Curtis pardon my ignorance but what does that opacity measure? Is it unburnt hydrocarbons maybe? I'm just curious...lol I know when I lived in Colo I always thought it was getting to be a Calif East with all the BS

[Pocket]

Hey Curtis pardon my ignorance but what does that opacity measure? Is it unburnt hydrocarbons maybe? I'm just curious...lol I know when I lived in Colo I always thought it was getting to be a Calif East with all the BS

Opacity testing here is just a measure of a beam of light passing through smoke. The higher the percentage, the more light is being blocked off.

[cj45lc]

Opacity testing here is just a measure of a beam of light passing through smoke. The higher the percentage, the more light is being blocked off.

OK thanks, was just curious

[Pocket]

No problem.

Here in CO with diesel testing, they don't really care what's in the smoke. They just test for how much smoke is coming out. The smoke cold be white, black, grey, whatever... they don't care. Just don't block off too much light and you'll pass.

The thing I hate though is the test is far less involved than testing a gasser. Yet emissions testing on a gasser is only $25, done every two years. A diesel is anywhere from $60-$90 (depending on the shop), and done every year. Freaking ripoff.

[cleatus12r]

emissions testing on a gasser is only $25, done every two years. A diesel is anywhere from $60-$90 (depending on the shop), and done every year. Freaking ripoff.

That surprises you? Heck, they get you at the pump AND testing.

The perils of owning a more "green" vehicle than a gasser.

[Pocket]

Well, dyno run this morning had it's fair share of glitches. The dyno operator had trouble getting it set up to record runs, then the calibration wouldn't set and stay set, so the horsepower and torque numbers ended up way low, and last... the printer wouldn't work.

So we had to write down the dyno results, and got to see the graphs on the screen in between pulls. The opacity meter was also still hooked up, so I got to see the smoke output between the pulls.

Had 3 runs that we were finally able to record.

Stock tune: 189 hp, 376 tq, 39% max opacity
My tune: 223 hp, 409 tq, 48% max opacity
Another tuner's race tune: 225 hp, 393 tq, 76% max opacity

Those are the results, and unfortunately there's not much I can say as far as max power. My tune and the other race tune made close to the same power according to those results, but with very different amounts of smoke. It's fair to say that I can't really compare power because of the dyno calibration. I had other tunes I was also going to compare, but unfortunately the dyno problems plagued us way too much. The only thing I can really compare is smoke, since there wasn't any dyno calibration needed to set it up. Visibly, there was a huge difference in smoke. The guys in the shop noticed that right away.

Peak torque for both of the tunes (not the stock tune) showed up at around 2400 RPM. Peak HP for both tunes showed up at the end test range at about 3500 RPM, basically the HP curve just kept rising until my foot came off the pedal. Both graphs looked almost identical. Basically it seems the rollers weren't putting down nearly enough load. Peak torque and horsepower should have registered at much lower RPM's. Stock tune had peak HP and torque occur at lower RPM's, and HP fell off above 3000 RPM as the stock tuning pulls the fuel back in a hurry.

At this point my only other option is drive out to a different dyno and see what I can do. Maybe I could head up to Greeley and pay a visit to PFI. That's the same shop that dyno'ed Blowby's truck IIRC.

Please note, do not ask me who's tunes I'm testing alongside mine. I will not name names, as I have absolutely zero incentive to start some tuning war, bashing, etc. This is simply a test of my own personal efforts, not someone else's. I simply wanted to see how my efforts stack up against others. Personally I've been very happy with my tuning, but at this point I don't really have concrete power numbers to show everyone. Sorry to disappoint.

Being that this is PHP's forum and out of respect to Bill, I will say that Bill's tunes were not part of that test.

[Pocket]

That surprises you? Heck, they get you at the pump AND testing.

The perils of owning a more "green" vehicle than a gasser.
I've bent over as far as I can go. Any further and I'll pull a hammy :disbelief:

[cleatus12r]

Had 3 runs that we were finally able to record.

Stock tune: 189 hp, 376 tq, 39% max opacity
My tune: 223 hp, 409 tq, 48% max opacity
Another tuner's race tune: 225 hp, 393 tq, 76% max opacity

Woo hoo. It's nice to see that your power levels are right on par with other 100 RWHP programs out there but with lower opacity levels.


Being that this is PHP's forum and out of respect to Bill, I will say that Bill's tunes were not part of that test. Whatever.... :cheesy smile:

Thanks for the update!