| Last summer, I could only get between 13.8-14.2s 1/4 and ~ 100-101 mph trapspeeds.  I didn't get to fully diagnose the problem before I had to put the car away in the fall. Here are some things for you to check out:1) Clutch - is it slipping yet? If you have a stock clutch still, at stage 3 its probably already on its way out.
 2) Timing - do you know whether its retarded back or not?
 3) Boost and/or Vacuum Leaks - check for them. This is a big priority for myself this spring.
 4) Compression? - Yikes! Probably unlikely that you actually have internal problems, but check it anyway.  I'll be checking mine too.
 5) Spark plugs - when did you change them last? And are you using the right type?
 6) Catalytic Converters - or at least the pre-cats, may have  some pluggage?
 Hope this helps.  If you figure something out that fixes your problem, please let me know.  I won't be able to tweak and test mine for at least another month or two. 
 
Z-JayEdmonton Z Car Club
 93 300ZX TT - Stage V
 01 Sentra SE - daily driver
 |