So I finally decided to tune my car a couple of weeks ago to see what my modest 14b setup could do. This is on a 180,000 mile bone stock junkyard engine with the low performance 1990 cams.
Mods:
Rewired Walbro 255HP
Denso 1600cc injectors
Archer Racing exhaust manifold
Custom 3" 1-piece T304 mandrel bent exhaust
3" Downpipe - no idea where it came from
Punishment Racing 14b J-pipe
Ebay 32x24x3 intercooler with 2.5" piping
ACT 2900 6-puck clutch
Fidanza Flywheel
Crushed BOV
Mendards MBC
MegaSquirt I (speed density)
LC-1 WBo2
E-*.*.. whatever shit comes out of the e85 pumps this time of year...
Green numbers were on 17 lbs of boost at 18* of timing advance. The red numbers were on 23 psi and 24* of timing advance (wouldn't make any more power past 24*) AFR's I dialed around 11.5 (on a gas scale)
The TQ output is ok, but they turbo just won't hold boost past about 5000 RPM. It drops to 16 lbs by 6500 RPM. I am not sure if the WG is getting blown open or if the housing just does not flow enough air to retain boost level? I've got a spare 14b exhaust housing that I ported that I might weld the WG shut and see if I can hold boost a little longer...
Fun stuff.
Threaded Mode