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Discussion Starter · #1 ·
Well it seems that i am getting some great info on sugggested solutions for the hole in my acceleration. It seems i need to find a dyno. i tried but the nearest awd was 250 miles away in atl. So then the fuse pulling thread comes along an gives me hope. <p>Here are the last milingering questions<p>I dont have stock runs to compare my ECU performance but it will give me some good data to look at as far as the accel hole goes. So, i know there is a decent amount of dyno data out there, but i dont think most of it has been published with the environmental data amb temp and such. So please feell free to drop me a link or post data<p>Secondly, My car is AWD and so ideally the runs would be an AWD running FWD. But i am sure that would limit the number of post I get. So to the mechanical/engineering smart minds. is there a "close" fit solution to make the other folks data comparable or is it better to take a face value and realize that it wont be perfect but mostly representative.
 

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Re: Combining ECU weak thread and AWD fuse pull for dyno (PornSStar)

My stock V50 AWD, in FWD mode Dynojet results are here: <A HREF="http://forums.swedespeed.com/zerothread?id=51548&page=2" TARGET="_blank">http://forums.swedespeed.com/z...age=2</A><p>There are many others. But, what are you hoping to discover by dynoing? The exact rpm of your torque-loss? Doesn't seem like the right tool, to me.<p>Tom.
 

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Discussion Starter · #3 ·
well i am looking into the dealer or the performance shop i am looking at taking my car to having an a/f gauge to use during the dyno. hoping to find some data to present to Evolve/powerchip for them to recommend fixes.<p>Several folks have suggested the wideband but wont that mess with the "chipped" ECU's setting or can i count on changing A/F ratios independntly. I will be honest when i say although i am learningquite a bit, i could def be out there as far as what the best solution is?
 

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Re: (PornSStar)

Air/fuel measurement is right there in the dyno charts I pointed at. And, Dave's S40 (FWD) has an Evolve ECU load too. Don't infer too much from a/f ratio changes IMO - the stock ecu pulls it rich too if you heatsoak. Because the tuned ECUs boost more, their cars heatsoak sooner, therefore you see them do the same thing, only sooner. The shop we used had a [email protected] fan.<p>Did Evolve ask you for this data? What have they said about it?<p>Tom.
 

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Discussion Starter · #5 ·
Tom <br>first off thanks for the help.<br>"heatsoak"--define?<br>I just called evolve, sometimes they need reminders about getting to thier emails. i am pretty sure they might say it is the K&N but we will see. More than anything i am really thinking i am not getting the performance advertised.<br>Part of this could be the heat here....but it did have the hole in accel in the colder months too.<br>Sean<br>PS thanks for the dyno info
 

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Re: (PornSStar)

Heatsoak is what happens when the intercooler can't take away the heat generated by the turbo compression. It's also called IAT - Intake Air Temperature, and the ECU will richen the mixture to compensate and avoid pinging. The car may also back off the boost, change the timing, etc.<p>On a dyno, all airflow is provided by fans, and the load is high, ergo very likely heatsoak. On the road, and in different weather, things can be different.<p>Re the K&N, have you tried taking it back to the stock a/f?<p>Tom.
 
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