I've had the Motordyne 5/16" spacer for about 6-8 months and never really noticed a difference. Lately my car has not felt as powerful but I figured I was just getting used to it. I have never driven another G or anything else to compare against until last week. I was on a work trip and had a 2010 Mustang V6 for a rental. I was surprised by the power, it actually felt more powerful than my G. At first, I actually thought it was a V8. When I found out that it only has 210hp I was quite surprised. I would have expected it to feel a lot slower.

I'm starting to think my car has some problems. Has anyone else experienced this after a spacer install? Other than a spacer, the only other mod is a stillen intake.

 

You're the ONLY person I've heard of who couldn't feel gains from the 5/16 spacer.

Reset the ECU. These cars learn your driving style and go into "Granny" mode if you don't do much wot driving.

 

^^ If that doesn't work, check that the spacer is properly sealed - no leaks.

 

https://g35driver.com/forums/intake-...oss-power.html

 

Reset the ecu. Mine was the same, then after I did that. my g35 took out a porsche

 

Put your stock air intake on and see if there is a difference.

 

Noobie here...only have had the car a month, how do you reset the ECU? I assume you can disconnect the battery for 5 mins. and it would do it. Also a quick question about the "Granny mode". I do baby mine 99% of the time due to the reason I bought it, as my DD I need something that'll get decent gas mileage, I save my aggressive driving for my weekend beast, my '08 Z06 Corvette.
Is it possible that my car is actually in Granny mode? I ask because my '08 Silverado with 315hp "feels" much more powerful than my G, although most of what we "feel" is actually the torque, not the HP, and the truck has considerably more grunt than the G.
The previous driver may have also babied the car before me putting it into granny mode before I even bought it.
I reserved judgement on the car for "feeling" kinda slow because after getting out of my 550 HP (it's modded) Corvette, anything "feels" slow.
Thanks guys for any help on this!