Semi stock dyno before and after

[projectdirtydaily]

So, I did my pre and post PiMP dyno testing the other day and the results were very interesting. Stock '86 5.0 with off road pipe, flowmasters, pulleys, cold air and cobra manifold made a freak peak pull @223/287 but was more consistently making 217, after PiMP swap and tune, the power was the same although it ran through the pull almost a second faster! We totally expected there NOT to be any gains in power so that wasn't surprising. The awesome part so far is that the driveability and part throttle is outstanding!!!!! Before the A/F was a moving target and now it's rock solid. The idle is now stable and the car actually feels quick to me. I drive it at least 40 miles daily and have no issues other than some tune touch ups here and there. Now that it's fully dyno tuned I'll check my mileage against the previous 20mpg however I'm having trouble keeping my foot out of it to do so. I'm now ready to start throwing mods at the car and I'll be documenting the results here as ell as on my own page. Longtubes (possibly 180 degree headers) and electric fan are next followed by a mild built bottom end with cam, heads, intake and finally single turbo depending on my mood. I'm very impressed with this ecu so far and can't wait to start adding features and modifications without the need for burning chips to a slow, outdated processor. P.S. the weather conditions were too different for me to feel good about the dyno results as I truly feel there was an appreciable gain in power but it got soaked up in thick, humid air and high temperatures.

I'm at home right now and can't remember the exact numbers so don't crucify me if they show up slightly different when I post up elsewhere!

[Stinger]

Nice! Thanks for posting the first update. The gains over the stock ECU will certainly get larger as your mods increase. As you said, on a stockish v8 setup there shouldn't be much of a peak power gain but that doesn't mean there isn't a noticeable improvement in overall quality of the tune.

What type of dyno is it?

What does your dyno guy think of it so far?

[projectdirtydaily]

It's a Dynojet 224, He was pleased with everything for the most part, It seems to be difficult to get a consistent idle but it isn't bad by any means. I really wish the A/C control worked so I can have A/C cut out at WOT and fan control when the compressor is engaged. Is it possible to make that stuff function?

[Stinger]

What type of idle control are you using? There are many options.

There are multiple programmable I/O's that can be used to do whatever you want to do with them (like cut the a/c). You just have to use them, or more specifically for non-typical uses like that, start a thread and ask what the best way to do it is and we'll guide you through it.

[projectdirtydaily]

Ok cool...... I'm using the stock IAC pwm

[Stinger]

I assume you mean PWM warmup (not closed loop)? If so, that's the most "basic" form of idle control so it won't be as steady as more advanced options.

[projectdirtydaily]

I'm using closed loop, just with a pwm valve, not stepper.

[Stinger]

OK, well if you want help with the idle settings or to enable idle advance or other strategies for a/c and fan control to do what you want, start a thread with your desires and we'll guide you through how to do so.