Low boost problem solved FINALLY!!

[djskorch]

So I installed my TRD SC about 10,000 miles ago and could never figure out why I was only getting 5psi. I checked all suggestions out such as leaks, worn rotors, etc. and was unable to find anything.... until yesterday.

Come to find out, TRD made an underdrive pulley as an option for people who were getting ping/detonation when the kits first came out. It was offered as a free replacement but was never sold as an individual part.

The original pulley size is a 2.37" whereas this underdrive pulley is a 2.65". From what I have read, each .1" equals approximately 1psi of boost. This is why I only see 5 when the kit is rated 6.5-7psi.

I have had 0 issues with pinging/detonation and the truck pulls very well without any fuel mods however the bug has bit me for more. (I am btw at about 3500ft elevation and ALWAYS run 91 or 93 octane.

Now I just have to decide, do I order the 2.2" now or do I find a stock 2.37" and see how the truck performs before getting the 2.2".

 

[Dous]

So I installed my TRD SC about 10,000 miles ago and could never figure out why I was only getting 5psi. I checked all suggestions out such as leaks, worn rotors, etc. and was unable to find anything.... until yesterday.

Come to find out, TRD made an underdrive pulley as an option for people who were getting ping/detonation when the kits first came out. It was offered as a free replacement but was never sold as an individual part.

The original pulley size is a 2.37" whereas this underdrive pulley is a 2.65". From what I have read, each .1" equals approximately 1psi of boost. This is why I only see 5 when the kit is rated 6.5-7psi.

I have had 0 issues with pinging/detonation and the truck pulls very well without any fuel mods however the bug has bit me for more. (I am btw at about 3500ft elevation and ALWAYS run 91 or 93 octane.

Now I just have to decide, do I order the 2.2" now or do I find a stock 2.37" and see how the truck performs before getting the 2.2".

Just get the 2.2, or even 2.1. It's just 100 bucks, and the nice red anodized aluminum looks nice under the hood

 

[djskorch]

^ I would like to get either of those but Im just worried about no supporting fuel mods right now. Hence why I am debating getting a stock size to see if I get detonation with that first.

 

[Dous]

^ I would like to get either of those but Im just worried about no supporting fuel mods right now. Hence why I am debating getting a stock size to see if I get detonation with that first.

Good thinking, well if you can get one cheap enough go for it.

But I imagine that if you run 93 octane with a 2.2 it won't ping. If it did, you could easily add a methanol kit for 300 bucks and get rid of any chance of pinging. It's a lot easier to do and cheaper than the 7th, but I don't think it is quite as good

TexasAce on YT had the 7th injector, but switched over to methanol injection and got rid of the 7th all together, and he flogs on that thing. So the meth injection would suffice

 

[djskorch]

haha just saw in your sig "TRD Catback Destroyed Offroad". Thats funny cuz I flattened the bottom of mine last time I was out. Crappy way to blow $500+ (although I only paid $90 for mine brand new haha)

 

[Dous]

haha just saw in your sig "TRD Catback Destroyed Offroad". Thats funny cuz I flattened the bottom of mine last time I was out. Crappy way to blow $500+ (although I only paid $90 for mine brand new haha)

Haha, I did a bit more than flatten it. I ran it over

 

[djskorch]

Ouch!! Just curious, do you polish your tip regularly (nobody take that dirty) mine has around 15,xxx on it and it is very dull and nasty looking. lol

 

[Hepar]

I wouldn't go to the 2.2" pulley unless you are prepared to do the fuel mods. Most likely you will run lean.

 

[jsukey]

:bravo:How can we not take that dirty?!!!! LOL :bravo:

 

[4-Ripcord]

I wouldn't go to the 2.2" pulley unless you are prepared to do the fuel mods. Most likely you will run lean.

THIS.

do a 7th injector before you do a small pulley.


I have a stock size pulley if you want one btw..