If you want a cheap quick upgrade while you shop for a permanent upgrade, go out and find H9011 halogen bulbs. You will have to modify them slightly to fit the harness and housing but it’s an instant 50% improvement in output. IIRC, Rockauto...
I went through this and it was the intake / exhaust manifolds, are you running headers by chance? If not it could be as simple as a hose or as disappointing as a crack in the intake manifold. Pics might help us help you.
Sure sounds like a big vac leak, spray carb cleaner at the base of carb and all around intake and exhaust manifolds to see if the idle pics up. Pics of the engine bay may help the community solve your problems
So, the vacuum leak……
I remember someone telling me a long time ago the monster intake like this would not work with headers.
I test fitted the two and all seemed good so I ran with it.
Turns out….the intake is so thick it was hitting the...
I had trouble finding this part number, it wasn't listed on the online Toyota parts dealer sites (or at least I couldn't find it), but I found it on a different parts system.
NUT, WING(FOR AIR CLEANER)
Hopefully this helps someone...
New radiator is in with the blue clutch fan. It seemingly cools so good i had a hard time getting to temp for the thermostat to open and bleed the system. We’ll see what happens when i take it up the mountain. Hope it keeps nice and cool now.
That interesting about airflow at different speeds. I didn’t think of that.
A new OEM radiator is on the way (comes with the foam) and a blue hub clutch fan. I got the non-modified version so i could modify it to my liking if needed.