This isn't going to matter to you Ben since you're going manual but if the throttle cable is too loose it will cause engine braking when you let go off the gas. The throttle cable should be tight but not too tight where it increases idle that means it's too tight.
I check my throttle cable about every 6 months. After a couple years it got too loose and when I let go off the gas it slowed down a lot. After I tightened it the car coasts longer.
I guess mine stays open but doesn't affect the idle. What I'm thinking is if the throttle cable is loose there is less tension when the spring closes the throttle. With more tension maybe it closes slower and lets it coast longer.
LOL. I don't think you realize I have an automatic. I'm sure as hell not going to put my auto in N while moving, I already have enough tranny problems. Also I'm not going to shut the engine down, this is cali, the worst drivers are here. If I had a manual I would of been 35+mpg a long time ago. An automatic limits a lot.
if i can drive a nissan quest with a ****ty engine and crappy tire pressures from city to city and managed not to dent the fuel gauge not even once (sadly that car did not have ODBII for me to plug my SG in) for a total distance of at least over 30 miles then with your lighter and nimble car i'm sure you can do
i understand that your worried about ruining your transmission but think of it this way. IF you can slide the shifter from D to N very easily without pressing the button then Im sure your car is meant for it. The nissan quest acts like if its in N as soon as I let off the gas and when the rev drops just slide it into N
as for the SG not being worth it, i hardly disagree, feedback is the best way to know which routes are good and which you should avoid. You'd be so surprised on which routes you can take and hardly use any gas at all.
to say automatics are useless is an understatement, even when i don't even FAS and only abuse N i can still managed high 40's and low 50's when I DO FAS.... not much difference is there?
that's all right, you have your reasons not to abuse N, i'll happily continue to do so in manuals (which i have the liberty of turning off the engine for bonus) or just shift it into N with an auto tranny (which i have the liberty of not shifting since i'm lazy)
if your rev rise when you shift fromm N to D then ok your auto tranny lick balls. If not.... your missing out good mpg...
If your reading this, then good for you, your saving some gas because your here.