MAFT and trans line pressure
MAFT and trans line pressure I'm currently running very rich at idle and the lower rpm range and I was wondering how much trans line pressure would be effected if I leaned out the base 5-10% just for normal driving? I would return the base back to 0 for when I went to the track. I'm just trying to hold on to the stock trans as long as possible. Would this small adjustment just for normal crusing hurt anything?
thanks,
Steve
thanks,
Steve
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Joined: Dec 2001
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From: Plainville,MA
Re: MAFT and trans line pressure Excellent question !! <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
I would like to know the answer to that question myself ! <img border="0" title="" alt="[Cool]" src="gr_images/icons/cool.gif" />
I would like to know the answer to that question myself ! <img border="0" title="" alt="[Cool]" src="gr_images/icons/cool.gif" />
Re: MAFT and trans line pressure </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Top Fuel:
<strong>I'm currently running very rich at idle and the lower rpm range and I was wondering how much trans line pressure would be effected if I leaned out the base 5-10% just for normal driving? I would return the base back to 0 for when I went to the track. I'm just trying to hold on to the stock trans as long as possible. Would this small adjustment just for normal crusing hurt anything?
thanks,
Steve</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Long time no talk to Steve <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
I dont have the exact numbers anymore but I used to run my MAFT about 20% lean because of the larger injectors/stock program and lost quite a bit of line pressure. Enough to make the trans go into 'overheat' 2nd gear only mode after only two passes. I ended up rigging up a hobbs switch to ground the wire to the PCM so it would go full line pressure at boost. Worked fine after that.
I dont think 10% would hurt - depending on power output of course. If you a HPP3 just up the firmness higher to make up for it..
<small>[ August 20, 2002, 11:42 PM: Message edited by: kp ]</small>
<strong>I'm currently running very rich at idle and the lower rpm range and I was wondering how much trans line pressure would be effected if I leaned out the base 5-10% just for normal driving? I would return the base back to 0 for when I went to the track. I'm just trying to hold on to the stock trans as long as possible. Would this small adjustment just for normal crusing hurt anything?
thanks,
Steve</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Long time no talk to Steve <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
I dont have the exact numbers anymore but I used to run my MAFT about 20% lean because of the larger injectors/stock program and lost quite a bit of line pressure. Enough to make the trans go into 'overheat' 2nd gear only mode after only two passes. I ended up rigging up a hobbs switch to ground the wire to the PCM so it would go full line pressure at boost. Worked fine after that.
I dont think 10% would hurt - depending on power output of course. If you a HPP3 just up the firmness higher to make up for it..
<small>[ August 20, 2002, 11:42 PM: Message edited by: kp ]</small>
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From: College Station, Tx
Re: MAFT and trans line pressure Everything is relative - will it decrease line pressure? Yes. Will that hurt? yes. Now are we talking a 10 mile difference in tranny life or 1000 miles? I don't really know. - my point is it's all relative.
The ideal solution would be to get LS1 Edit and bump your line pressure back up. You could also install a shift kit, etc. to achieve the same effect.
You might also consider installing a tranny pressure guage - this would let you observe directly what is occurring.
Chris
The ideal solution would be to get LS1 Edit and bump your line pressure back up. You could also install a shift kit, etc. to achieve the same effect.
You might also consider installing a tranny pressure guage - this would let you observe directly what is occurring.
Chris
