Second link down is a 28+ page thread about the issue. On page 26 you will see a format for a signin sheet that is going to be sent to nissan about the issue.Sentra ser spec v 07+ Bogging issue Sign in sheet.
Ppl in that thread i post about have tried grounding EVERYTHING. Like seriously lol. Grounding has made the issue less sever for them, but not helped much.PapaSmurf2k3 wrote:Has anyone tried adding extra/better ground wires? I've seen many-a-bucking problem cured that way.
Lol i sure would not either. Guys with wideband and dataloggers have caught the problem and and the ratios stay the same. Lots of ppl thought it was part of the fuel system for a while(myself included) but keeping the same afr really says otherwise.PapaSmurf2k3 wrote:Yeah I forgot to mention I definitely did NOT read through those 28 pages haha. Just felt like throwing out a suggestion. Glad it helped them a little bit anyway. It would be interesting to put the car on a dyno and measure the air/fuel ratios to see if it leans out or goes rich at that point (or if its all timing).
SER Wes wrote:^^^Torque steer for a Spec is normal. They have a stupid amount of torque for a 20k car. You aint drivin no civic.
Heat could be a big part of the issue. The qr25 runs VERY hot and with the high compression of the spec-v it gets even hotter. Right now everyone thinks that it has something to do with the knock sensor, but no one is sure if the engine is really knocking, or if the sensor is just too sensitive. I think someone should upgrade the ratiator and see if that helps. With 20-30% less heat in the bay and hood spacers to help further i think that we could prove without a doubt if heat was a factor.
NissanXEPIlot wrote:I'd go with a cooler thermostat too. But stacking washers to prop the hood is a ill advised idea. Solid aluminum bushings or spacers would be the better bet. Ace hardware or Home Depot for the these items.
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