rpms come down too slow, rev isnt as fast as i like
08-13-2005, 08:34 PM
#1
rpms come down too slow, rev isnt as fast as i like how can i fix this? i thought my timing coudl have something to do with it but i changed it back with no help.
id like to have the car rev quicker, can i do that with one of the throttle cracker tables, or something like that?
also when i back off the rpms will hang sometimes, also they may go to normal and then rev up a little then go back down to normal. i dont really get why it does that. all idle airflow values are close than they have ever been
id like to have the car rev quicker, can i do that with one of the throttle cracker tables, or something like that?
also when i back off the rpms will hang sometimes, also they may go to normal and then rev up a little then go back down to normal. i dont really get why it does that. all idle airflow values are close than they have ever been
08-14-2005, 02:45 AM
#2
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I'm assuming you mean rev faster in neutral... I'm not positive, but I think the throttle follower table might be what you're interested in.
The situation you describe (rpms come down too slow) ... is that in gear/moving? I think the throttle cracker table is used while you're still moving.
The situation you describe (rpms come down too slow) ... is that in gear/moving? I think the throttle cracker table is used while you're still moving.
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09-06-2005, 06:29 PM
#8
What was it you ended up doing for the rpms coming down too slow?
Is this related to tuning?
I just upgraded my cam to TR224(114), and am using the dynotune from the last cam GT2-3. I've upped my idle a tad, but the rest of the tune is just as before.
I'm using LS1 Edit here.
What do I modify to adjust for the rpms dropping too slowly, when I pull the car out of gear??
Thanks
Is this related to tuning?
I just upgraded my cam to TR224(114), and am using the dynotune from the last cam GT2-3. I've upped my idle a tad, but the rest of the tune is just as before.
I'm using LS1 Edit here.
What do I modify to adjust for the rpms dropping too slowly, when I pull the car out of gear??
Thanks
09-07-2005, 12:37 AM
#9
Originally Posted by Michael02hawk
What was it you ended up doing for the rpms coming down too slow?
Is this related to tuning?
I just upgraded my cam to TR224(114), and am using the dynotune from the last cam GT2-3. I've upped my idle a tad, but the rest of the tune is just as before.
I'm using LS1 Edit here.
What do I modify to adjust for the rpms dropping too slowly, when I pull the car out of gear??
Thanks
Is this related to tuning?
I just upgraded my cam to TR224(114), and am using the dynotune from the last cam GT2-3. I've upped my idle a tad, but the rest of the tune is just as before.
I'm using LS1 Edit here.
What do I modify to adjust for the rpms dropping too slowly, when I pull the car out of gear??
Thanks
09-07-2005, 01:27 PM
#11
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Originally Posted by technical
Just watch out in the turns. 
Mine revs and drops quick.. kinda fun unless you want to ***** foot around on the shifting around town...
but its good, makes me shift quicker....
09-07-2005, 02:22 PM
#13
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Originally Posted by WS6FirebirdTA00
ok well i messed with the 0 speed settings for the cracker and follower and wow, lot better response and recovery. i set them up by the closest cells, im gonna go up more. i love to just tap the gas and have the revs shoot up
Now you know even more about idle tuning.
09-07-2005, 02:47 PM
#15
Nope, I didnt do anything with the throttle body.
I was running before, and still am using, the CNC ported TB from SLP.
I did bump up my Idle Speed a little bit, after the cam.
It was too jerky and too easy to stall (M6).
I also bumped up the Idle Air a little too, reverse was too jerky also!
I dont recall if the slow rpm drop was an issue before I changed the Idle Speed/Idle Air.
Any more thoughts?
--------------
Did you drill a bigger hole in the throttle body blade? If yes, the hole you drilled is now too big! ...so get a smaller hole....
I was running before, and still am using, the CNC ported TB from SLP.
I did bump up my Idle Speed a little bit, after the cam.
It was too jerky and too easy to stall (M6).
I also bumped up the Idle Air a little too, reverse was too jerky also!
I dont recall if the slow rpm drop was an issue before I changed the Idle Speed/Idle Air.
Any more thoughts?
--------------
Did you drill a bigger hole in the throttle body blade? If yes, the hole you drilled is now too big! ...so get a smaller hole....
Last edited by Michael02hawk; 09-07-2005 at 03:18 PM.
09-07-2005, 05:51 PM
#16
Originally Posted by MeentSS02
What values did you mess with again? And by how much? I'd be interested in screwing around with this just to see what it does.
purrvert, that problem was due to my high timing. i knocked down the timing thrown in on start up and it helped that up. right now the idle timing is about 15* higher in the higher rpms and the rpms will rev high until the car runs for about 1 min. after that they dont hang anymore.
