extractors V6 4Runner

Gary,
In my opinion anything that allows your engine breath better is a bonus, I think you will notice a difference, it may only be slight but there will be a difference, my economy improved slightly maybe a kilometer a K. I don't have a 4runner but fitting extractors will have a similar effect on the majority of engines, again this is all my opinion from my own experience, hope it helps. Keep the shiny side up

Gary

I use to own a V6 4runner and went through the same problem.

I'm not sure now why I didn't end up fitting them but I think the reason was, at the time, they just were'nt available for that motor.

Have you been able to find any???

As stated in the other reply, I too always believed extractors to be a good thing and have fitted them to many other cars in the past. Its been about 8 years since I had the 4runner but the reason I didn't get them would have been either 1. I couldn't get them or 2. All reports were not to get them on that motor.

One thing I do remember though was someone who had put a larger exhaust on from the standard pipe which comes down from the manifolds(where the manifolds join into one pipe)

I remember that person stating they were getting better performance from a freer flowing system.

hope you can understand my dribble..

cheers

gday gary.
im cant speak for for runner but as said above extractors will make a difference.
ive fitted extractors to about 4 of our cars and been a change in all of them.
breath a little easier and rev a little easier.
also a bigger exhaust will also make a differencenew job coming so no fraser this time:-((

I had the idea that the V6 in the 4Runner was similar/same as my Prado engine. If so, my experience might be relevant. I went to a well respected tuning shop in Brisbane to get a Unichip, and he recommended a larger exhaust but not extractors - he thought that the factory set was quite good and you wouldn't gain much from fitting extractors. From memory, the exhaust gave me about 10% improvement up the top end, and the chip gave about 10% across the range, and some better fuel economy (eg after putting it on I went around the outback for 8500 km with a hell of a load inside and on top, and averaged about 14 l/100km). Note that this was done with Optimax, so he could wind up the spark advance further - I had an additional switch fitted so I could run normal unleaded when optimax was not available. I thought a 20% improvement on the dyno was reasonable. If you fit extractors, be careful how you do it. I have extractors and unichip on my Falcon, but discovered to my disgust that there are extractors and extractors. In the falcon, tube diameter is critical, and the optimum size to get the right exhaust gas velocity etc is quite small. Most extractors sold have larger tubes for visual appeal and actually reduce performance rather than increasing it.
Good luck with it!Russell S
Prado RV6