Ronald P. Caster

rcaster@yahoo.com 

April 18th, 2005 - Completed the installation of the Eaton M90 Supercharger.

September 22, 2005 - Dyno Run @ JBA Performance -

188-ftlb Torque, 4756-rpm, 70-mph, 3.9-lb boost

183-horse power, 5775-rpm, 85-mph, 4.7-lb boost

September 29, 2005 - Dyno Run @ JBA Performance -

266-ftlb Torque, 3188-rpm, 71-mph, ???-lb boost

204-horse power, 5145-rpm, ??-mph, ???-lb boost

December 5, 2005 - Dyno Run @ JBA Performance -

250-ftlb Torque, 3906-rpm, 57-mph, 4.2-lb boost

216-horse power, 5605-rpm, 82-mph, 5.3-lb boost

With reference to the article “PROJECT RANGE RUNNER” in the January 2006 “FOUR WHEELER” magazine on page 86:

Using the same Dyno at “JBA Racing in San Diego, CA”, that is stated as being 15% more conservative than the “Dynojet”, I have come to the following conclusions:

A) The (prior) baseline on the tested ranger with only an after market intake was 153 hp with 176 lb. ft. torque.

B) The (final) results with the “Explorer Express Blower”, “JBA Cat4ward headers”, and “Evol exhaust”, was 225 hp with 257 lb. Ft. torque.

C) Therefore the gains were 72 hp and 81 lb. Ft. torque.

Therefore based on the fact that my engine was with an after market air intake only as with the tested vehicle:

A) The (base) of 153 hp with 176 lb. Ft. torque, would be my starting point.

B) My (1st) run on September 22, 2005 with the M90 installed using everything stock except for the aftermarket air intake was 183 hp with 188 lb. Ft. torque. This relates to a gain of (30 hp and 7 lb. Ft. torque).

C) My (2nd) run on September 29, 2005 with a mild tune from Gery of SCT to get away from a previous lean condition. The run noted 204 hp with 266 lb. Ft. torque. This relates to a gain of (51 hp and 90 lb. Ft. torque).

D) My (3rd) run on December 5, 2005 with the additional changes of installing a “Flowmaster Super 40 with 3” inlet and 2- 2 ½” outlets out the side lightning style, and increasing the air inlet tube to 3 ½” od. An increase to 216 hp and 250 lb. Ft. torque. This relates to a gain of (63 hp and 74 lb. Ft. torque).

I’m running at (9 hp and 7 lb. Ft. torque) less than the tested vehicle. I wonder what my final results would be after installing “JBA Cat4ward headers), and an upgraded (Tune), 30lb injectors, 80mm MAF?