EVO has me stumped
#1
Newbie
Thread Starter
iTrader: (8)
Join Date: Oct 2005
Location: Las Vegas
Posts: 83
Likes: 0
Received 0 Likes
on
0 Posts
EVO has me stumped
Ok so I just had my motor built no change to the motor still 2.0 only difference is it was bored over 20. I made 350 on pump gas last time on the dyno. I got on the dyno this weekend and it made 278 big difference. It was giving 0-2 counts of knock on 10 or so pulls and then started giving 36 counts of knock. We got out of the gas and got it off the dyno and noticed the exhaust cam was off one tooth probably why the motor loss power. After getting that adjusted the car is still giving huge counts of knock. I adjusted my knock multiplier tables to 18 low mid 20 and high no change and its still giving large counts of knock. I was running race gas the whole time. I have no idea what the car is doing but its pulling timing bad and logging lots of knock. Any ideas out there?
#7
Newbie
Thread Starter
iTrader: (8)
Join Date: Oct 2005
Location: Las Vegas
Posts: 83
Likes: 0
Received 0 Likes
on
0 Posts
AFR was great boost was down from 26 to 24 and new plugs BRP8ES, injectors are the same pump same i did add a fuel rail. nothing was changed on the tune same map. I did a compression test thats all 165-170 all the way across.
Trending Topics
#10
Evolved Member
iTrader: (49)
To the OP, make sure your knock sensor was properly tightened with a torque wrench. Unfortunately, many built engines are just noisier than stock engines so the sensor picks up more sound, especially with your balance shaft removed.
#13
Evolved Member
iTrader: (17)
Join Date: Apr 2004
Location: 41° 59' N, 87° 54' W
Posts: 6,224
Likes: 0
Received 0 Likes
on
0 Posts
I ran into the same issues with a built 2.0, no balance shafts, stock ECU. LOTS of phantom knock between 2500-4000 RPM. We'd do back to back dyno pulls that were 50whp apart due to pulled timing. If you want to figure out if its an issue related to the balance shafts and/or built internals, start your pull at higher RPM. You should be able to get a clean pull above 4000 RPM.
In my case I got tired of dealing with it and finally bit the bullet and went with an AEM. Car now runs perfect and picked up 20whp over its previous best pull. Not sure how much more has been unlocked in the factory ECU by now, though. This was 1.5 years ago for me.
l8r)
In my case I got tired of dealing with it and finally bit the bullet and went with an AEM. Car now runs perfect and picked up 20whp over its previous best pull. Not sure how much more has been unlocked in the factory ECU by now, though. This was 1.5 years ago for me.
l8r)
Thread
Thread Starter
Forum
Replies
Last Post