So I finally had my car tuned today by Shawn Church of Church Automotive. He spent about 2 hours tuning the EMS for daily driving. The block was still pretty new (~250 miles) so the tune was very conservative. We had the typical problems with the Greddy kit (boost spiked to 9.05 PSI then dropped off to about 7.8 psi). Keep in mind the A/F ratios were from the tail pipe sniffer wideband so it reads about 0.8 leaner than pre-cat readings which were verified since I have my UEGO wideband installed pre-cat. Car runs a little funny (deceleration and partial throttle) without O2 feedback right now but other than that it runs a lot better than when the Blue Box was runnin' the show. Numbers aren't the best but then again I wasn't expecting much at this point.

My mods:

99 4DR GSR
Stock B18C1 Head
Benson Sleeves
81mm 9:1 CP Pistons
Eagle Rods
AEM EMS
Walbro 255HP Fuel Pump
Hondata Intake Manifold Gasket
RC 750cc Injectors
Greddy EVO2 Exhaust
Blitz SBC-id boost controller
ACT XTSS clutch
ACT streetlite flywheel

Things that hurt my HP numbers:
-Stock cat
-Greddy 2inch downpipe

Anyway on with the plots:

Horsepower and TQ Baseline run was 215hp with butterflies shut. We were having problems getting them to open so the (IAB) butterflies were open throughout on this run.


TQ and A/F Ratio (A/F reading is 0.8 leaner than actual reading)


Manifold pressure (Boost) Notice the spike at 4300 rpm then drops off (probably due to back pressure). Peak HP occured at 7.8 psi.



Modified by iiilgsrlll at 3:13 PM 9/18/2004