Dyno'd the Cobra yesterday after 5 years with a tune I inherited from previous owner. I guess you don't trust dyno sheets a previous owner passed on to you.
The sheet from 2005 he gave me showed 485 rwhp/484 rwtq...and good air/fuel in the range of 11-14.
Yesterday....rwhp was 433 and rwtq was 400. Air/Fuel was fine until 3500 rpms and then dives below 9. To top it off, when I pull my dipstick, the oil has a slight gasoline smell to it.
The dyno guy wants to tune the car badly...was all excited about it...for $625.00 w/ a handheld included.
Advice Needed......does a tune solve the problems of RWHP/RWTQ/Gas smell in oil and are there any hidden problems I should be aware of or have checked out?
How does a previous tune degrade so badly when nothing has ever been changed on the car since last tune? Does a tuned car have to be "reset" every so often?
Can I drive the car conservatively until I get the work done?
Thanks for all feedback....
The sheet from 2005 he gave me showed 485 rwhp/484 rwtq...and good air/fuel in the range of 11-14.
Yesterday....rwhp was 433 and rwtq was 400. Air/Fuel was fine until 3500 rpms and then dives below 9. To top it off, when I pull my dipstick, the oil has a slight gasoline smell to it.
The dyno guy wants to tune the car badly...was all excited about it...for $625.00 w/ a handheld included.
Advice Needed......does a tune solve the problems of RWHP/RWTQ/Gas smell in oil and are there any hidden problems I should be aware of or have checked out?
How does a previous tune degrade so badly when nothing has ever been changed on the car since last tune? Does a tuned car have to be "reset" every so often?
Can I drive the car conservatively until I get the work done?
Thanks for all feedback....