Worcester/Boston Social Thread
EvoM Staff Alumni
iTrader: (16)
What to know why your evo feels like it hits a brick wall when it isn't warmed up?
This is the timing map it interpolates with when the engine is cold. Real nice...
This is the timing map it interpolates with when the engine is cold. Real nice...
Evolving Member
iTrader: (2)
Join Date: Aug 2008
Location: MA
Posts: 232
Likes: 0
Received 0 Likes
on
0 Posts
Evolving Member
Thread Starter
iTrader: (7)
Join Date: Jun 2007
Location: Northborough, MA
Posts: 359
Likes: 0
Received 0 Likes
on
0 Posts
Newbie
iTrader: (2)
Join Date: May 2007
Location: Worcester, MA
Posts: 50
Likes: 0
Received 0 Likes
on
0 Posts
Newbie
Join Date: Aug 2007
Location: old testament god of the squirrels
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
Newbie
Join Date: Aug 2007
Location: old testament god of the squirrels
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
retarding timing that much will cause fuel to burn well outside of the exhaust ports and cause EGTs to skyrocket since flame propagation will be incomplete. my guess is it is their way of warming up a big slab of cast iron that you folks call a bottom end.
EvoM Staff Alumni
iTrader: (16)
I turned it off k? You are probably right but from what i noticed with it turned off is the car actually warms up quicker.
Newbie
Join Date: Aug 2007
Location: old testament god of the squirrels
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
Evolved Member
iTrader: (4)
Join Date: Apr 2008
Location: Marlborough, MA
Posts: 1,118
Likes: 0
Received 0 Likes
on
0 Posts
I wish I could understand what your showing there, but it's all way above my head, even after reading that threads you pointed me to a week or so ago. I won't even go into my ECU because I'm to scared to mess something up.
I bought my cable with the intention of learning it and what not, but I'm to scared to mess up my car.
I bought my cable with the intention of learning it and what not, but I'm to scared to mess up my car.
Newbie
Join Date: Aug 2007
Location: old testament god of the squirrels
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
I wish I could understand what your showing there, but it's all way above my head, even after reading that threads you pointed me to a week or so ago. I won't even go into my ECU because I'm to scared to mess something up.
I bought my cable with the intention of learning it and what not, but I'm to scared to mess up my car.
I bought my cable with the intention of learning it and what not, but I'm to scared to mess up my car.
a lot of the internet tunes i have seen either tune WOT only, or try and tune the rest of the maps incorrectly. sadly, it's because most people want to pay to get a bigass dyno number and don't care about anything else, so i think that's the effect it has had on the tuning market.
Evolving Member
Thread Starter
iTrader: (7)
Join Date: Jun 2007
Location: Northborough, MA
Posts: 359
Likes: 0
Received 0 Likes
on
0 Posts
conceptually it's not that hard. you just need to be patient and work slowly and make sure your changes make sense. also, a lot of people forget to try a lot of different conditions- what happens if you mash the throttle at 5000 RPM, what happens if you are power shifting the car, what happens if you are in a steady cruise and roll onto the throttle.
a lot of the internet tunes i have seen either tune WOT only, or try and tune the rest of the maps incorrectly. sadly, it's because most people want to pay to get a bigass dyno number and don't care about anything else, so i think that's the effect it has had on the tuning market.
a lot of the internet tunes i have seen either tune WOT only, or try and tune the rest of the maps incorrectly. sadly, it's because most people want to pay to get a bigass dyno number and don't care about anything else, so i think that's the effect it has had on the tuning market.
sooo many conditions... nevermind whether...
do any cars read ait temp/humidity and adjust their maps accordingly? that seems like a logical next step to me... other than having a "cold engine" map
Newbie
Join Date: Aug 2007
Location: old testament god of the squirrels
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
on the subaru, there were compensations for most everything (barometric pressure, intake air temp, etc). a lot of them weren't even used from the factory if that's any indication of how complex the subaru ecu is. those are independent of the coolant temp compensation maps.
albeit one of the most sophisticated ecus, subaru's achillies heel is the fact that the IAT sensor is pre turbo, whereas it should ideally be post-intercooler.
EvoM Staff Alumni
iTrader: (16)
conceptually it's not that hard. you just need to be patient and work slowly and make sure your changes make sense. also, a lot of people forget to try a lot of different conditions- what happens if you mash the throttle at 5000 RPM, what happens if you are power shifting the car, what happens if you are in a steady cruise and roll onto the throttle.
a lot of the internet tunes i have seen either tune WOT only, or try and tune the rest of the maps incorrectly. sadly, it's because most people want to pay to get a bigass dyno number and don't care about anything else, so i think that's the effect it has had on the tuning market.
a lot of the internet tunes i have seen either tune WOT only, or try and tune the rest of the maps incorrectly. sadly, it's because most people want to pay to get a bigass dyno number and don't care about anything else, so i think that's the effect it has had on the tuning market.
Evolved Member
iTrader: (7)
Join Date: Dec 2006
Location: boston
Posts: 1,096
Likes: 0
Received 0 Likes
on
0 Posts
Evolving Member
iTrader: (2)
Join Date: Aug 2008
Location: MA
Posts: 232
Likes: 0
Received 0 Likes
on
0 Posts
What is really unfortunate is that the evo is pretty limited on what can be tuned. There is no stock boost control so all there really is to tune is timing and fuel. Tip in (accell enrichment) has yet to be properly discovered and they are continuing to find numerous other tables so until then the evo is pretty dumb to tune. Which doesn't seem to be a bad thing since people are making a ton of power on limited capabilities.