experienced turbo people
Thread Starter
Joined: Nov 2001
Posts: 7,903
Likes: 1
From: Cleveland, OH
experienced turbo people I have been out tuning on my car...timing and guessing at the a/f from the o2s. The car is slow to make boost and that is fine....lots has changed in my combo so no biggie. Anyway after 3400 rpms it hauls booty but is pretty dead below that. What would add some spunk while boost is building...lean it out a little and more timing? Of course a wideband would be great but I can't go there till next week. The boost builds smoothly so I'm hoping its just a fuel or timing issue that has the power curve flat till 3400 rpms. Otherwise it seems to be running good...course I usually have problems right after I say that
Re: experienced turbo people Leaning the mix a bit will help, that's assuming you're already in enrichment by that point (ie WOT) <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Reducing timing will help as well. While an increase in timing will give you more power, reducing timing will put more energy (read heat) into the exhaust. Heat is more what spools the turbo rather than flow.
A degree or two less timing in the range you sweep through as boost builds will help them spool.
Get thee to a wideband!! <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
good luck <img border="0" alt="[Fluffy]" title="" src="graemlins/fluffy.gif" />
Reducing timing will help as well. While an increase in timing will give you more power, reducing timing will put more energy (read heat) into the exhaust. Heat is more what spools the turbo rather than flow.
A degree or two less timing in the range you sweep through as boost builds will help them spool.
Get thee to a wideband!! <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
good luck <img border="0" alt="[Fluffy]" title="" src="graemlins/fluffy.gif" />
Thread Starter
Joined: Nov 2001
Posts: 7,903
Likes: 1
From: Cleveland, OH
Re: experienced turbo people Thats kinda what I thought......lower timing doesnt really seem to help spool for me so I will raise it some down low and lean it out. It's kinda funny....if you put in one straight timing curve...say like 15 degrees....raise it 2 degrees all the way across...eventually you will find where your peak tq/hp points from KR <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> Mine seems to be 4000/5500 rpms
