Quote:
Originally Posted by preston
some of your posts indicate the engine is very streetable. I was wondering if you could comment on a few things -
what is your idle vacuum and rpm ?
When you do a cold start at < 45 degrees out, is it the kind of OEM cold start where you can just drive away right away with no issues or is it still a bit hot roddy where you like to let it warm up a minute or two or at least have to drive a bit gingerly at first ? By gingerly I just mean in my rig on a cold start it will drive more or less ok, but it doesn't like a bunch of quick throttle and it will still be a bit balky at low rpms and small throttle inputs until it warms up.
|
The vacuum level measures just over 10 in Hg at the 1,000 rpm idle speed. I took the vacuum reading off the port on the back of the TB.
After the engine starts I usually let the car run for about 30 seconds before I touch the gas. At that point the car is ready to go. Before the engine gets warmed up I just roll on the throttle gradually. It takes a bit before you can hit it hard. The engine does not balk or stumble though. It has a crisp smooth tip in off idle even when cold. I do a lot of driving on the street and in traffic... no problem... easy to drive, seriously.
This is my first LS engine project with computer control. I am amazed how well the engine starts up, runs, and idles, and returns to idle. The idle always returns to exactly 1,000 rpm at the stop lights (no surging). I have driven the engine in 100 F degree temps this past August and now in the 30's F with no change in the tune. So much better than a carb set up.
Here is a link to an under hood; cold start; idle video. The temp was in the upper 30's F when I did the video. The idle speed was 1,000 rpm.