802SHO 2010 Build
- Thread starter 802SHO
- Start date
For reference.. here is the datalog from the dyno pull...
802SHO said:
No, It was a dynojet.
802SHO said:
I wouldn't say they are better. For power pulls the industry tends to revolve around Dynojet numbers. Mustang, Dynodynamics, etc are all different brands that different shops use. Mustang dynos are also referred to as "heart breakers" because they read really low. But they are supposed to be fantastic for tuning.
StealBlueSHO said:
Yes I think I've heard that before. It's too bad I didn't know of this shop before so I won't have anything to compare my numbers to....like for instance even if it were to read low or high, the difference in power made from one tune to the next would be undeniable.
I think so long as my car runs really strong and feels better than ever, I won't get obsessed with dyno numbers. In the future at least now if I add more things I can go back to this dyno and see how much I gain.
802SHO said:
Yup, dyno print outs tell a story.. hows the torque curve look, how does the afr's look, is the curve what is expected, is the power delivery smooth, etc etc etc... For comparison between major upgrades a before and after comparison is very nice as well. But for just a peak HP/TQ reference, not much weight behind that. AND the same car on the same dyno can put down different numbers on different days, even after corrections. Corrections are not perfect either.. and they don't take into account ECU cutting power due to IAT's, coolant temps, etc..
If you do three pulls and the power delivery smooth, curves looks right, etc.. then you should be happy with that.
802SHO said:
Up to you, I have had them done in 4th and 3rd... 4th is closer to 1:1 so most shops want to go as close to that as possible. However, in the SHO world, 3rd tends to be standard.
SBS is right don’t get set on hitting a certain number on a dyno. Its all about power and torque curves. Also usable power. My old car would only do 450-470whp on a mustang. I would walk all over cars that did over 500who on the same dyno. They tuned for a peak number. I tuned for a flat usable power curve.
So here is a comparison...
The higher number was the pull right after the turbo's were installed.. car was driven around for a short drive to warm up the components, then dropped on the dyno... the lower number is after I drove for 2hr's down interstate 95 in traffic, then dropped on the dyno.. it was also much hotter and more humid that day as well..
The peak numbers are different, but look at the curves.. they are identical. So what this tells me is the car was running exactly the same both days, but either I was pulling power the whole time from heat soak (which it was) or the DYNO was calibrated slightly different that day as well resulting in a slightly lower output. However, the point stands that the curves are IDENTICAL but peak is is off by a couple percentage points.
The higher number was the pull right after the turbo's were installed.. car was driven around for a short drive to warm up the components, then dropped on the dyno... the lower number is after I drove for 2hr's down interstate 95 in traffic, then dropped on the dyno.. it was also much hotter and more humid that day as well..
The peak numbers are different, but look at the curves.. they are identical. So what this tells me is the car was running exactly the same both days, but either I was pulling power the whole time from heat soak (which it was) or the DYNO was calibrated slightly different that day as well resulting in a slightly lower output. However, the point stands that the curves are IDENTICAL but peak is is off by a couple percentage points.
802SHO said:
3.8% difference between the runs. I guess what I am trying to say is, don't get hung up on peak numbers
My shop was kind enough to provide me the dynojet files from all my runs so I can play with them as I need to... dynojet software is free.
Manu you were right! After having DTC P0130 and P0150 at the same time you suggested to clean the sensors before buying new wideband. So far so good on cleaning my 3bar and IAT sensors before replacing my wideband oxygen sensors. I cleaned them...at the same time which I found they both have the identical part numbers....is that correct? My 3bar and IAT sensor are the same? I then swapped out my sp534 plugs with the sp542 plugs all gapped to about .027-.028. Brad asked me about my Meth settings and I think my new pump is more powerful than the last as he made remarks that I was spraying a lot....I kept my settings the same and just swapped the pumps. I decreased the initial by about a quarter turn and also increased gain to 8 to start spraying at 8psi. We make boost so damn quick I don't think I need to spray at less than 8.
Took it for a warm up drive then two data logs. One from a dead stop, no brake boost just a hard WOT 1,2,3 gear sweep. Then another at about 2,000 rpm in 3rd, WOT 3rd gear to about 5,600 Rpm. That's it. It felt better I must say and my check engine light did NOT come back on.
Pic of my sp534 with just 3k miles.
Took it for a warm up drive then two data logs. One from a dead stop, no brake boost just a hard WOT 1,2,3 gear sweep. Then another at about 2,000 rpm in 3rd, WOT 3rd gear to about 5,600 Rpm. That's it. It felt better I must say and my check engine light did NOT come back on.
Pic of my sp534 with just 3k miles.
