poping under 2000 rpms
04-01-2010, 02:37 PM
#1
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poping under 2000 rpms hi
just wondering when the car is poping a bit under 2000 rpmīs and it has a hesitating throtte response and sometimes under pressure it backfires...
very powerless there...
what should i be looking for in the tune, what needs to be changed?
but after 2000 rpms itīs all good.
thanks
Baezi
just wondering when the car is poping a bit under 2000 rpmīs and it has a hesitating throtte response and sometimes under pressure it backfires...
very powerless there...
what should i be looking for in the tune, what needs to be changed?
but after 2000 rpms itīs all good.
thanks
Baezi
04-02-2010, 12:37 AM
#2
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There is a setting under Idle, Idle Airflow, Throttle follower, TPS step size. My 99 was set at 1.8 and I lowered it to 1.4, it drove like a different car, really smooth on the low end. Before I changed that it would buck and stall below 2000.
My friend has a 2000 and his was set to 1.0, so I don't know if this works for newer cars.
Also, take a look at your timing map for low rpm, should be 18-20 below 2000, some people just set it at 25.
My friend has a 2000 and his was set to 1.0, so I don't know if this works for newer cars.
Also, take a look at your timing map for low rpm, should be 18-20 below 2000, some people just set it at 25.
04-03-2010, 06:32 AM
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There is a setting under Idle, Idle Airflow, Throttle follower, TPS step size. My 99 was set at 1.8 and I lowered it to 1.4, it drove like a different car, really smooth on the low end. Before I changed that it would buck and stall below 2000.
My friend has a 2000 and his was set to 1.0, so I don't know if this works for newer cars.
Also, take a look at your timing map for low rpm, should be 18-20 below 2000, some people just set it at 25.
My friend has a 2000 and his was set to 1.0, so I don't know if this works for newer cars.
Also, take a look at your timing map for low rpm, should be 18-20 below 2000, some people just set it at 25.
tanks alot
Baezi
04-04-2010, 06:01 AM
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Injector tables are not right i think in my tune,,,,, could that not be the fault????
iīm running lucas 621030 43,5 psi (3bar) said for vette 5,7 v8 but in the tune the only thing that has been change is the pressure 43,5 the other tables are from stock injectors....
what do you guys say about that???
Baezi
Last edited by baezi z06; 04-04-2010 at 06:07 AM.
04-05-2010, 04:29 AM
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There is a setting under Idle, Idle Airflow, Throttle follower, TPS step size. My 99 was set at 1.8 and I lowered it to 1.4, it drove like a different car, really smooth on the low end. Before I changed that it would buck and stall below 2000.
My friend has a 2000 and his was set to 1.0, so I don't know if this works for newer cars.
Also, take a look at your timing map for low rpm, should be 18-20 below 2000, some people just set it at 25.
My friend has a 2000 and his was set to 1.0, so I don't know if this works for newer cars.
Also, take a look at your timing map for low rpm, should be 18-20 below 2000, some people just set it at 25.
tps step size: is at 1.0%
spark timing is:
24@1200
24@1400
25@1600
26@1800
29 @2000
Baezi
