View Full Version : RPM question

02-01-2005, 07:57 PM
This is a dumb question, but at what RPM do you usually shift at under normal driving conditions? The shift light lights up at a low RPM. Is it better to shift at higher RPM's because of the 32 valves and 4 cam?

02-01-2005, 08:28 PM
Well, the shift light comes on around 2k rpms stock. For normal driving conditions I would shift around 2 - 3k. The reason for shifting at the low rpms is to keep the rpms down which is supposed to save on gas! I shift at higher rpms just for my preference because I like hearing the exhaust tones!:D

It's all on preference!:thumbsup:

02-01-2005, 09:17 PM
Whe I shift above 3k rpms i find that I don't feel the the drive train lash. Shifting if much smoother for me.

02-02-2005, 07:43 AM
agreed...the tranny seems to like it above 3k RPM's...not quite as notchy

02-02-2005, 09:09 AM
I drove a whole tank of gas shifting at the upshift light and got about 18 mpg. Shifting at the higher rpms the fuel economy drops quickly. But I did not buy the Cobra for gas milage.:bounce:

I agree that shifting at higher rpms feels better, less drive train noise and more exhaust noise.:thumbsup:

02-02-2005, 07:04 PM
yeah...I dont think ive seen 200miles on one tank yet...i gotta start putting 93 in instead 100 :eek:

02-03-2005, 07:41 PM
yeah...I dont think ive seen 200miles on one tank yet...i gotta start putting 93 in instead 100 :eek:
I always use 93 and last summer I drove from NYC to Cape Cod (259miles). When I left I filled my tank up. When I pulled into the bay area I was exactly on a half tank. Needless to say I was pretty impressed, considering that my average speed was 70mph. Now driving around the five boroughs and long island is a different story. I average two tanks a week.

02-03-2005, 08:20 PM
I drive a 50/50 hwy city and I get around 215-225 a tank full. I drive around 75-80 on the HWY and shift out around 3g. I only have a CAI for mods untill the exhaust gets put on friday.

For long trips I go to YUMA I get around 24 mpg driveing there. I set the cruse at 80-85. At those speeds tough I can pass at will and not have to slow down and speedup again.


02-04-2005, 08:33 AM
yeah...mine's all driving around town...stop and go...i'm going on a relatively long trip 300miles round trip this weekend, so we'll see how she does...oh yeah, definitely putting in 93 for this one :rotf:

02-04-2005, 07:06 PM
blk04~ Do you feel a noticable difference using the 100? Also, would switching back and fourth cause complications?