so I have an 04 gsr and was wondering if it's common that the tranny shifts much smoother when you fill your gas tank? I notice it does in my car for like the first 1/4 tank, then after it shifts a bit notchy. What causes this? Injectors, fuel pump, fuel pressure? Or would I need to upgrade any of the following. Motor is completely stock with only a Spoolin Up cop kit and Works drop in air filter.

 

LOL what?

 

Not related its in your head.

 

I would go on to wonder that by the time he heads to the gas station his tranny fluids not cold so it shifts better? But no, nothing is related to the other.

 

I mean this could be but its a huge difference in shifting every time I fill up its like I don't have to try shifting and its great but later it gets notchy shifting around 3k rpm. This would happen on stock clutch and still does now on a broken in comp stage 2 clutch. Maybe I could be crazy but its an every time type thing.

 

LOL, dude its in your head.

Only thing I've experienced that affects it from being notchy to smooth/loose would be temperature.
Higher temperatures ncreases the fluidity of the liquids, I.E similar to heating up cooking oil on a pan and watching the liquid become easier to move.

 

Lol. I assume the tranny is warmed up by the time you filled up

 

What if something in his tranny isn't sitting right and the extra weight of the fuel helps the car sit where it needs to be for the tranny to shift correctly. I know that sounds crazy but I'm just throwing it out there.

 

engine torque damper!

 

I was also thinking this might help

 

I was also thinking this might help