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Hesitation/Bog under load

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64 views 6 replies 2 participants last post by  sfvr30  
#1 ·
Hey all,
Sometimes my car, specifically in automatic, but also to a lesser degree in manual mode, feels incredibly laggy/hesitant. My first thought was obviously heat soak, but I have an upgraded heat exchanger, auxiliary coolant pump, and the Z1 Fender coolant tank installed. I can’t see my CAT’s directly, as my OBD doesn’t read that, but my charge air coolant temps and IAT’s generally stay below 110-115, even in hot weather. As far as I know, that’s not terrible. I’m concerned it may be some sort of boost leak or problem with my turbos, as it almost feels like there is an additional amount of turbo lag. Does anybody else have experience with a similar problem? What do you think it is?
I’m willing to grab some data logs if anybody thinks that can help diagnose the issue.
 
#3 ·
No codes, now that I’m thinking about it it may be oil temps. I use a Bluetooth LE OBDII scanner with OBDFusion, I have the advanced package for Nissan too.
 
#5 ·
Oops here is the link from the App Store you are apple.

‎Car Scanner ELM OBD2
I’ve got an ECUTEK tuner on the way. I’m not sure if it reads your info without a license but if it does I’ll use that as a scanner. I’ll be able to see oil pressure and CAT and such hopefully.