Can the factory computer keep up with the extra air volume and larger exhaust? As we discussed before, theres a area of diminishing returns with out a stand alone and wide bands telling the ECU what to do with the better flow. Otherwise that ECU is going to fight for that perfect 14.1:1 with in it's limits.
The computer tries to adjust as much as it can within fsctory parameters. Generally catback exhaust doesn’t require a retune, but test pipes start to push past what the ecu is used to. Same with CAI. The car (3.7) doesn’t starve for fuel either, even when tuning so larger injectors won’t add any value unless going flex fuel/e85 where larger volume is required. Obviously in boosted cars you can potentially run into fueling issues, but I’m not certain off the top of my head where that line is.
Great question! I too have the spacer and feel the difference as well. Though that question did cross my mind. I am looking into a performance mass air flow sensor to see if it helps read the extra air volume. The Jet 69138 maf or the UpRev maf sensor by Z1 motorsports.
Plenum spacers don't change anything relevant... There's no true effect so why would the ecu have an issue? Naturally aspirated motors will only pull as much air as can fit in the cylinder...spacing the plenum only has one singular effect, miniscule lower temperatures
Would it be worthwhile to install this plenum spacer on my 2005 350Z convertible with an automatic transmission? I drive conservatively, rarely exceed 4500 RPM, and the car already has over 120,000 miles on it.
If you don’t ever push the car. I wouldn’t even bother. But if you want a little more throttle response and a little more pep, then it’s a simple and relatively inexpensive upgrade.
I would imagine impact is minimal. It basically just evens flow to all intake runners. It would be interesting to see pressure change at various points
@@angelisalive I may not have even disconnected the battery to install -- if it wasn't in the video, I didn't do it. Never got a CEL after install either.
Wasted? Lol Engine temps weren’t a concern. If this was an “I installed a manifold spacer to get engine block temps down” then sure it would have been pointless-but that’s not why the mod was done, nor would it really have any impact of the temp of the block. What’s your point