Detuning the 280ZX
Thread Starter
The Evil Twin
Joined: Mar 2001
Posts: 9,297
From: Seattle, WA
Detuning the 280ZX
After 5 years of driving with this big 'performance' 60mm throttle body from Motorsport Auto, I decided to put the stock throttle body back on so I had smoother throttle control for traffic driving.
What a difference. Easier starts, much better cold engine running, more torque under partial throttle response. Feels like the same top end power. And of course, it is easier to control small amounts of throttle in slow traffic. I should never have changed the throttle body in the first place.
I never did the larger AFM conversion and I did not port the intake manifold so really the larger throttle body wasn't all that useful anyway. Those mods along with a bigger cam are what would let the 60mm throttle do its job. If you don't have all that, i say stick with the stock throttle.
One mod I did was to bypass the throttle heater. The coolant hose that runs to the top of the throttle body now goes past the throttle body so it will stay colder. I
ll have to see if the throttle body freezes up this winter or not.
What a difference. Easier starts, much better cold engine running, more torque under partial throttle response. Feels like the same top end power. And of course, it is easier to control small amounts of throttle in slow traffic. I should never have changed the throttle body in the first place.
I never did the larger AFM conversion and I did not port the intake manifold so really the larger throttle body wasn't all that useful anyway. Those mods along with a bigger cam are what would let the 60mm throttle do its job. If you don't have all that, i say stick with the stock throttle.
One mod I did was to bypass the throttle heater. The coolant hose that runs to the top of the throttle body now goes past the throttle body so it will stay colder. I
ll have to see if the throttle body freezes up this winter or not.
Registered User
Joined: Aug 2004
Posts: 788
From: Layton, UT
Venemous, if you're seriously parting out your Zed, I would really like to call dibs on your fenders, airdam, and headlight buckets. I'll have to see what my financial situation is like in the close future, but those are really what I'm in need of. It'll be a small while though, got to see if I get a job soon. 
Registered User
Joined: Dec 2004
Posts: 123
From: Tacoma, WA (Hilltop)
The car in question is posted in my sig, look up the sales post I made... as for parting it out I meant the stuff I can sell & still keep the car running, ther Cusco stress bars & the alpine stereo... the car runs I'm not that stupid any further inquiries please PM I don't need to ***** this thread away from Bleach
any further inquiries please PM I don't need to ***** this thread away from Bleach
