JohnBradley's 2.2 long rod build
Dec 23, 2010, 04:40 PM
#456
I have been looking and I think it might be more than some 67mm cars even, but it seems Dave has some cars that make more based on the dyno conversion. 93 octane might get me there but I am happy with what it does now.
Last edited by JohnBradley; Dec 23, 2010 at 04:48 PM.
Dec 25, 2010, 01:45 PM
#457
Built 2.4 vs the stock 2.0 at its peak-
Interesting to see that though it does make more power everywhere, the spool isnt as increased as you'd think. How I have it tuned is part of it but not as much as you would expect I dont think.
Interesting to see that though it does make more power everywhere, the spool isnt as increased as you'd think. How I have it tuned is part of it but not as much as you would expect I dont think.
Dec 27, 2010, 11:42 PM
#458
Evolving Member
Thanks for posting those detailed logs on the previous page.
To me it's interesting how low the timing gets on these high powered cars, at around 5000 rpm, and how much timing can be recovered higher up the rev band.
Also the knock sum vs knock voltage is interesting.
In your logs the knock sum is always very low or 0, yet the voltage from the knock sensor goes pretty high in some places. There must be some tricky filtering or whatever in the stock ecu for converting the knock sensor signal to "knock sum".
This makes me wonder, what do you do if you are using a stand-alone like an AEM EMS, which I'm thinking just has an input for the knock sensor signal, and then you build your own table or something for knock retard from that voltage. I wouldn't know how to do that because what I see makes no sense!
To me it's interesting how low the timing gets on these high powered cars, at around 5000 rpm, and how much timing can be recovered higher up the rev band.
Also the knock sum vs knock voltage is interesting.
In your logs the knock sum is always very low or 0, yet the voltage from the knock sensor goes pretty high in some places. There must be some tricky filtering or whatever in the stock ecu for converting the knock sensor signal to "knock sum".
This makes me wonder, what do you do if you are using a stand-alone like an AEM EMS, which I'm thinking just has an input for the knock sensor signal, and then you build your own table or something for knock retard from that voltage. I wouldn't know how to do that because what I see makes no sense!
Last edited by Talonboost; Dec 27, 2010 at 11:50 PM.
Dec 28, 2010, 12:07 AM
#459
Thanks for posting those detailed logs on the previous page.
To me it's interesting how low the timing gets on these high powered cars, at around 5000 rpm, and how much timing can be recovered higher up the rev band.
Also the knock sum vs knock voltage is interesting.
In your logs the knock sum is always very low or 0, yet the voltage from the knock sensor goes pretty high in some places. There must be some tricky filtering or whatever in the stock ecu for converting the knock sensor signal to "knock sum".
This makes me wonder, what do you do if you are using a stand-alone like an AEM EMS, which I'm thinking just has an input for the knock sensor signal, and then you build your own table or something for knock retard from that voltage. I wouldn't know how to do that because what I see makes no sense!
To me it's interesting how low the timing gets on these high powered cars, at around 5000 rpm, and how much timing can be recovered higher up the rev band.
Also the knock sum vs knock voltage is interesting.
In your logs the knock sum is always very low or 0, yet the voltage from the knock sensor goes pretty high in some places. There must be some tricky filtering or whatever in the stock ecu for converting the knock sensor signal to "knock sum".
This makes me wonder, what do you do if you are using a stand-alone like an AEM EMS, which I'm thinking just has an input for the knock sensor signal, and then you build your own table or something for knock retard from that voltage. I wouldn't know how to do that because what I see makes no sense!
Jan 1, 2011, 01:31 PM
#461
Evolving Member
Jan 1, 2011, 01:50 PM
#462
Making power is never easy and since depending on how you wanna slice it we are either driving the equivalent of a 4.8L 1300whp V8 or 1950whp 7.2L motor (440cid)....ON PUMPGAS. Thats before we get to E85 and other race type fuels.
The process sounds more intense and time consuming than it is but its something that needs to be done regardless unless we have disposable income to toss at motors and headgaskets
aaron
Jan 1, 2011, 02:33 PM
#463
Evolving Member
