Engine speed at 70mph
#18
Originally Posted by kako
Are you refering to the vacume hose that connects to the Z-tube ?
#19
Originally Posted by OCG35
he prob means anywhere in the intake - at the airbox, at the TB and the location you are asking... just be sure everything is buttoned up... I think you would have other issues though if there was a substantial enough leak.
#20
Originally Posted by kako
what kind of other issues will I have if there's enough leak ?
Other than that - I can't offer a solution, sorry.
#21
Originally Posted by OCG35
First of all you should here it... also I would think the car would have symptoms other than what you have described... I'm not going to play the what would happen if this happened game... the question is - are there any other symptoms other than 3K rmp at 70mph?... since you don’t know what your idle rmp was prior to the install I don’t know if your issue is the same as mine. I idle at 300. When I had the problem I described, the fix was what I offered.
Other than that - I can't offer a solution, sorry.
Other than that - I can't offer a solution, sorry.
#26
Registered User
iTrader: (5)
Join Date: Jan 2007
Location: Dallas, TX
Posts: 290
Likes: 0
Received 0 Likes
on
0 Posts
2007 G35 Coupe AT and MT gear ratios and final drive ratios:
----5 A/T----6 M/T Gear ratio s (:1 )
1st 3.540 ----3.794
2nd 2.264 ----2.324
3rd 1.471 ----1.624
4th 1.000 ----1.271
5th 0.834 ----1.000
6th-----------0.794
Reverse 2.370 ----3.446
Final drive ratio (:1) AT / MT
3.357 3.538
My 2007 AT coupe revs 3,000rpm's at 70 mph.
The AT and the MT won't read the same rpm at the same speed.
John
----5 A/T----6 M/T Gear ratio s (:1 )
1st 3.540 ----3.794
2nd 2.264 ----2.324
3rd 1.471 ----1.624
4th 1.000 ----1.271
5th 0.834 ----1.000
6th-----------0.794
Reverse 2.370 ----3.446
Final drive ratio (:1) AT / MT
3.357 3.538
My 2007 AT coupe revs 3,000rpm's at 70 mph.
The AT and the MT won't read the same rpm at the same speed.
John
Last edited by txgcoupe; 04-15-2007 at 10:58 PM.
#27
#28
Unless your tach needle or speedometer needle broke, no mod is going to change your RPM's at a certain speed. There are a fixed amount of teeth in the gear so there is only one possible RPM to be at for a certain speed unless you actually change the gear itself, the final drive ratio, or the overall diameter of the wheels. Intake, ECU reset, turbos, camshafts, whatever will not change your engine speed at a given speed.
#29
Originally Posted by Pwoz
Unless your tach needle or speedometer needle broke, no mod is going to change your RPM's at a certain speed. There are a fixed amount of teeth in the gear so there is only one possible RPM to be at for a certain speed unless you actually change the gear itself, the final drive ratio, or the overall diameter of the wheels. Intake, ECU reset, turbos, camshafts, whatever will not change your engine speed at a given speed.