Microtech pump settings with ported throttle body?
#1
Full Member
Thread Starter
Join Date: Oct 2001
Location: Melbourne, Australia
Posts: 62
Likes: 0
Received 0 Likes
on
0 Posts
pump settings with ported throttle body?
Hey guys,
I have an LTX8 controlling a JC cosmo 13b street port, with a TA-45 turbo, 550cc pri's and 1700cc sec's. I got excited a while ago and ported the standard throttle body and lower intake manifold and think i might of stuffed it up as since i did the mod it now has an anoying stumble/flatspot if i give it a sharp press on the throttle from idle, or between gear changes (cruising), it also gives a small pop out the exhaust when it experiences the flatspot. I have added a couple of pics below of the mods i did to the throttlebody and the manifold, does it look like i have cut the center of the throttle body out to much which could be causing the flatspot? My current pump 1 and pump 2 settings are as follows
Pump1
amt = 5%
pulse = 1%
trig = 12
stop = 0hg's
Pump2
start = 2500rpm
amt = 30%
time = 10
trig = 16
stop = 0hg's
I have tried a few other combinations but i can't seem to get rid of the flatspot, I have a wideband meter so any input in the way you guys setup the pump settings with a wideband etc would be greatly appreciated
http://img16.exs.cx/img16/507/lowermanifold7.jpg
http://img16.exs.cx/img16/7632/throttlebody7s.jpg
thanks in advance
cheers
Lance
I have an LTX8 controlling a JC cosmo 13b street port, with a TA-45 turbo, 550cc pri's and 1700cc sec's. I got excited a while ago and ported the standard throttle body and lower intake manifold and think i might of stuffed it up as since i did the mod it now has an anoying stumble/flatspot if i give it a sharp press on the throttle from idle, or between gear changes (cruising), it also gives a small pop out the exhaust when it experiences the flatspot. I have added a couple of pics below of the mods i did to the throttlebody and the manifold, does it look like i have cut the center of the throttle body out to much which could be causing the flatspot? My current pump 1 and pump 2 settings are as follows
Pump1
amt = 5%
pulse = 1%
trig = 12
stop = 0hg's
Pump2
start = 2500rpm
amt = 30%
time = 10
trig = 16
stop = 0hg's
I have tried a few other combinations but i can't seem to get rid of the flatspot, I have a wideband meter so any input in the way you guys setup the pump settings with a wideband etc would be greatly appreciated
http://img16.exs.cx/img16/507/lowermanifold7.jpg
http://img16.exs.cx/img16/7632/throttlebody7s.jpg
thanks in advance
cheers
Lance
Thread
Thread Starter
Forum
Replies
Last Post
trickster
2nd Generation Specific (1986-1992)
25
07-01-23 04:40 PM
CaptainKRM
2nd Generation Specific (1986-1992)
14
08-26-15 09:52 PM