well guys just got in from dyno only change from last time was the header from nolimitzind. I ordered the STRUP got 171 whp will post graph later also installed an apexi afc for tuning the fuel but it didnt do much they run pretty good from the factory. next mod S pipe and scuba tank delete. going on to my quest for 180

 

Holy run on sentence!

 

im on my phone typing too fast SORRY

 

good results

 

Stock axle-back? Excellent results either way. How much did the header add?

You could get ~6 free whp by removing the balance shafts. A few TC guys have done this and I plan to soon. Porting the TB should be good for a few more hp too.

https://www.scionlife.com/forums/vie...aft&&start=300

 

nice numbers! i think i'm at around 160 with my intake, pulley, and scuba-less catback

 

I already removed the shafts i only saw 3 whp but it revs fast now good mod for the money is free!!!!

 

Cool! I thought 6whp sounded too good to be true. Still, 3whp for free ain't bad at all. I also like the idea of removing a potential failure item. The balance shafts are the weakest link in the 2AZ-FE.

How's the vibration? Porting the TB should get you some more free whp. I didn't dyno mine before but I plan to get on a dyno after I delete the balance shafts. Good luck on 180whp.

 

the vibration is not bad at all do it if you need any help let me know

 

Thanks! Did you tap the oil passage and install a bolt, install a plate over it or just JB Weld it? I was thinking about making an aluminum plate to cover it and using the adjacent bolt hole to attach the cover plate with some hi-temp rtv to seal it.

 

I tapped the hole put a stud on it with temp sealant works excellent

 

Thats awesome! Id like to see your car on a Dyno Dynamics though.

 

you're getting some good #'s
i'm thinking i'm getting about the same just never gotten a chance to get it dynoed.

what is the purpose of the balance shaft?
are there's any negative for removing it?

 

x2

 

X3 haha..

 

Balance shafts are there just for luxury so you dont feeel vibrations form the engine. I want power so forget about luxury the vibration is not bad at all and they have been cases when the shafts break and trash all the engine.

 

what shaft can you take a pic of it and post it. I am new to the 2nd gen world have not learned to much about them LOL!! I know mostly all about the 1st gens though lol!

 

Here's a good link for balance shaft info. FWIW, the only XB2 engine failures that I've read about were caused by faulty balance shaft bearings. The balance shafts rotate at twice the crank speed and their only purpose is to counter engine vibration inherent in in-line 4 cyl engines.

https://www.scionlife.com/forums/vie...aft&&start=300

 

So you wanna pic of my shaft eh?

 

wow removing the balance shafts seems pretty risky for maybe a few hp... I tend to think the engineers making our cars put these in for a good reason and i am not a fan of removing parts of my engine/tranny that the factory installed...

Good luck to all of those who do this...