CAMARO6 - View Single Post

DIYguy · 07-02-2020, 11:13 AM

Depending upon how thick the spacer is it may be necessary to slightly trim a rib on the top of a wiring guide just below the throttle body position.
At least it was necessary on mine.
Other than that though, as BOYD3800SII said installing a spacer is a dead simple ten to fifteen minute job.

Speaking only from my own experiments (yours may well vary) pretty much everything that has been suggested does help.

Removing or wiring open the exhaust dampers is a plus. I originally wired mine fully open using heavy steel wire and stainless steel hose clamps because they rattled. If I ever have the exhaust system off the car I will permanently remove them as PolynesianPowerhouse suggested. A side benefit is a nicer exhaust sound.
Removing the air baffles inside the manifold opening helped my car with off-idle flat spots. Use a sharp "end cutter" tool for this. The only downside I have noticed was a slight increase in intake noise. Not a big concern though.
I mirror polished an OEM replacement throttle body I put on a while back. It made a definite improvement without any doubt. The Soler unit would be an improvement on that I'm quite sure, but it is a significant amount of money and might involve a lot of down time right now.
Finally (and I can already imagine some of you rolling your eyes, but please indulge me) I designed and 3D printed a 12mm thick spiral throat spacer just for kicks, being a "frugal" skeptic of them in general. Amazingly it also improved the off-idle flat spot which is now more or less gone. I'm just using it for testing but so far it has held up perfectly and makes a noticeable difference. I wholly agree that for a direct injection engine it shouldn't matter, but in fact it does. At least this one does. I have had it on and off again several times and every time I can easily feel a difference.

None of this will turn your V6 into a ZL-1 and might not even show up except as blips on a real dyno.
But it all works together in little ways, and again speaking only for myself I can feel the differences.

07-02-2020, 11:13 AM	#27
DIYguy Drives: 2017 Camaro 1LT Join Date: Mar 2019 Location: California Posts: 241 View My Garage	Depending upon how thick the spacer is it may be necessary to slightly trim a rib on the top of a wiring guide just below the throttle body position. At least it was necessary on mine. Other than that though, as BOYD3800SII said installing a spacer is a dead simple ten to fifteen minute job. Speaking only from my own experiments (yours may well vary) pretty much everything that has been suggested does help. Removing or wiring open the exhaust dampers is a plus. I originally wired mine fully open using heavy steel wire and stainless steel hose clamps because they rattled. If I ever have the exhaust system off the car I will permanently remove them as PolynesianPowerhouse suggested. A side benefit is a nicer exhaust sound. Removing the air baffles inside the manifold opening helped my car with off-idle flat spots. Use a sharp "end cutter" tool for this. The only downside I have noticed was a slight increase in intake noise. Not a big concern though. I mirror polished an OEM replacement throttle body I put on a while back. It made a definite improvement without any doubt. The Soler unit would be an improvement on that I'm quite sure, but it is a significant amount of money and might involve a lot of down time right now. Finally (and I can already imagine some of you rolling your eyes, but please indulge me) I designed and 3D printed a 12mm thick spiral throat spacer just for kicks, being a "frugal" skeptic of them in general. Amazingly it also improved the off-idle flat spot which is now more or less gone. I'm just using it for testing but so far it has held up perfectly and makes a noticeable difference. I wholly agree that for a direct injection engine it shouldn't matter, but in fact it does. At least this one does. I have had it on and off again several times and every time I can easily feel a difference. None of this will turn your V6 into a ZL-1 and might not even show up except as blips on a real dyno. But it all works together in little ways, and again speaking only for myself I can feel the differences. __________________ Gen6 Camaro LT (my daily driver), Cruze ECO (grocery getter), Chevy SS Pickup (wife's daily driver), Honda Shadow, Honda CBX Last edited by DIYguy; 07-02-2020 at 11:46 AM.