Going to look at a 98 with a factory installed supercharger. I know what to look for and ask in regards to the rest of the truck but am not familiar with the supercharger and what to look listen/for.
Any help would be great.
Here’s a link:
https://baltimore.craigslist.org/cto/6677706242.html
I see why you are asking. There's a lot to that 4Runner and for the price he's selling at, you will need to ask questions and try and get some honest questions.
Here's my list I would ask:
1. Edelbrock doesn't make headers for the 4Runner. EDIT: I found a set. Looks like they were made around the same time these 4Runners were new but were discontinued soon after.
2. How was the Supra MAF installed, and does he have the OEM parts to switch it back (including any wiring repairs)? Tuning for a bigger MAF isn't a plug and play deal. I didn't go that route for a reason, especially since the Supra MAF is still just an oversized turbine-style MAF that restricts airflow, just less of it.
3. What piggyback controller is installed and what has been modified for the tune (O2 sensor, fuel injectors, etc.)? Sounds like it might be the URD 6 injector upgrade kit.
4. Has it ever been tuned on a dyno? If yes, does he have the dyno sheet? Torque curve should be fairly flat or the tune was done wrong.
5. How many miles on the supercharger, if known? If the black kind, a new nose cone and oil is all that's needed to get it back up and running in top shape.
If there's a check engine light at all, seriously consider if you want it or not. Badly wired piggyback controllers can be extremely hard to track down, just helped a friend and he had to have his controller completely re-wired to clean up a P0125. Also, you'll want to be able to do a full-throttle run to make sure it runs well at high boost. If he won't let you do that, have him do it and if he won't, just assume something is wrong with either the engine or the piggyback and tune.
