Normal Boost?

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

SilverSH0

SHO Member
Joined
Nov 17, 2015
Messages
896
Reaction score
827
I recently replaced my rear turbo with a new one and now I THINK my car might not be acting normal. In my mind it doesn't seem normal but I never paid particular attention. Here's what the symptoms are that I'm asking if other vehicles are the same.

When cruising down the highway I think it's building boost too quickly. For example, I'm cruising down the flat highway at 60 mph (in 6th gear) and everything seems normal. Then I will come to a normal incline and the little bit of extra load from going up an incline will cause the car to build to about 1-2 lbs of boost. I don't recall it ever really building boost on the highway (but never actually checked) so it seems abnormal to me. Is this normal for everyone else? Do you build a little bit of boost if you're cruising at ~60 mph and start up an incline?

I connected my tuner and it appears that the vehicle starts to enter boost when the "load value as a fraction" gets above the 0.75 value. That seems to happen when simply cruising at highway speeds (60-65 mpg) and going up an incline. Again, is this normal for everyone's car?
 

mmh64

Active Member
Joined
Feb 29, 2016
Messages
123
Reaction score
88
Location
crown point indiana
Mine does this too. Creeps into boost a little on highway incline. I don't know about load value.
 

mrhighcaliber

SHO Member
Joined
May 31, 2015
Messages
320
Reaction score
671
This sounds completely normal for low rpm, 60mphish 6th gear cruise. Your rpms are probably 1500ish (if non pp). The pcm will add boost to produce more toque so that it doesn't have to unlock the torque converter or downshift. Better mpg, and driveability.

Sent from my Nexus 6 using Tapatalk
 
Back
Top