1990 Plymouth Laser RS

[Jeff D]

This is the Build Thread for 1990 Plymouth Laser RS. Reply below.

 

[Jeff D]

Car is now tuned on the FIC 1200s, and for an E40 mix. Hoping to get closer to E85 soon. Future plans involve a nice twin scroll t4 manifold, a PTE 6266(sitting on the shelf collecting dust sure looks pretty though), Auto swap and so on will keep this updated as time goes.

 

[Jeff D]

Getting better as we go. Car got a nice E60 mix tonight and was playing around with it a bit. 20psi on the 20G and we're right there at 38lbs/m. No changes in timing yet still only 13° up top, I believe im running out of fuel pump though. I noticed in the log during the pull it goes from E58 down to E53 by 7k RPM along with my AFR tapering from 11.3-11.5 up to 11.9 and it's only a 255 pump so time to get something bigger put in it. Super happy with it so far!

 

[NextLevelDelica]

Awesome Build. At what point of boost pressure did the AFR taper to 11.9? Just curious because Im running a 255 as well.

 

[Jeff D]

Awesome Build. At what point of boost pressure did the AFR taper to 11.9? Just curious because Im running a 255 as well.

This was a pull that started at 17psi creeping up to 21psi by roughly 6400RPM on E60, but im also running a 48psi base fuel pressure (need a new adjustable fuel pressure regulator. It won't let me go any lower) so I'm not sure if having that higher pressure will affect yours the same or not.

 

[NextLevelDelica]

Right on. I'm sure I won't run into similar issues simply because my peak boost will be much lower than yours (in my current project).
I am looking and getting a Laser soon tho! Saw one in a field and found the owner. Pretty beat up but could be fun to rally.