Outlander99

Just ran my 1990 - L98 on a Mustang Dyno, Base line HP was 268.4hp with 319.3 torque, 100 Shot produced 341.6HP with 414.6 Torque and the 150 shot provided 361.6HP with 452.7 torque. Also had the oppertunity to meet Mike Wood of NX systems at the shop as he was getting some work done on the NX Mustang.. This man is very knowlegeable. He showed me the difference between a NOS system and and NX system.

cplonner

Besides the nitrous what do you have done to your car?

Outlander99

True Dual exhaust (no cat) and magna flow mufflers, no other mods yet.

mn_vette

What were the a/f ratios on the runs? It sounds like something is a little off, perhaps jetting perhaps bottle pressure.

silver86

Wow, you got 268whp from just exhaust mods on an L98?!

90Indy

My hat is off to you for getting your baseline numbers so high with virtually no mods on an L98. I was not so lucky as I got 246hp/307tq out of my L98 with numerous mods. Granted I was running a mail order tune from PCMforless but you are doing well. Carry on.

90Indy

ubnpast

nice numbers, did you pull any timing?
I saw some guy at the track with an l98, I believe he had a 150 shot, he was running 12.7's and I did find out that the track was fairly poor last friday.

Outlander99

My A/F was out, I was too rich. I will get the exact numbers on Monday. I was impressed with the baseline and the 100 shot but the 150 is less than expected. Left the timming as it was. No bottle heater and no pressure guage.

cplonner

Thats why I was asking, that is good power.

pushrod-v8

268 at the wheel with a exhaust system?

.....the car is not stock...especially on a mustang dyno, which typically give lower hp numbers. A stock '90 makes what....~240 flywheel hp? You are making more at the wheels than the engine was rated at the factory flywheel with just an exhuast?

If you have not owned the car your entire life, then somebody modified the motor.

Good numbers anyway!