i have been reading some threads on here and a couple in other forums. the issue of running lean by running an intake on a trd reflashed has surfaced but never really explained or discussed in details. i know of one person that made this claim and everyone else seems to follow him. But i want to make sure that it is true.. what is your take in this? I am going to be buying a SRi for my SCed tc.

 

oh. i will also be running the 9 psi pulley.

 

There are many people on here who ran/are running intake and 9.5 pulley and were getting good A/F readings(it will vary depending on where you live, exp: temps & elevation), the best thing would be to have an A/F gauge installed before you do it, that way you can monitor it as you upgrade, the reason it seems to be ok is because the TRD re-flash tends to be a bit rich so adding a little more air does not hurt ti too much; good luck and hope that helps.

 

thanks brotha! can you pose some link that i can look into? i will greatly appreciate it. i am new to the site and still trying to figure out how to navigate.

 

Here you go:
https://www.scionlife.com/forums/sho...ake+9.5+pulley

https://www.scionlife.com/forums/sho...ake+9.5+pulley

https://www.scionlife.com/forums/sho...ake+9.5+pulley

https://www.scionlife.com/forums/sho...ake+9.5+pulley

Remember that not everybody has had the same experience so what would be best for you is to get an A/F gauge installed just to be on the safe side, hope that helps.

 

Mine runs just fine. I have a wideband and get good numbers.

 

^^^ hey i think i have seen your videos on youtube. how is your car dealing with running a BOV? are you having a hard shift when venting?


thanks bro. i really appreciate you posting these

 

^ yea thats me. The hks bov works well with my setup, no issues at all.

 

The air flow was calculated based upon stock air box and it's restrictions, so if you added airflow, you then altered that equation, which means in theory it will be leaner. The system may not throw a code for it, but it will undoubtedly alter the fuel trims all together.

 

What AFRs are you seeing during cruise and WOT? Also, running a cat on your car?

 

+1

 

Thanks paul. IYO its safe to run the 9.5 with an sri for a DD? i am not really looking into racing. maybe just a couple of hard driving here and there.

 

Numbers are while Im driving so there close to actual.
IDLE 15.3
PARTIAL THROTTLE 14.5
3/4 THROTTLE 12.0

 

Correct me if im wrong but dont those numbers seem alittle on the lean side?

 

idle is pretty lean. Should be in the 14.4-14.8 range

part throttle, define part throttle 10%? 30%? 50%?

3/4 throttle seems a touch lean for what will preserve the cat and run well on this car and not have a huge propensity to knock

 

Like I said this is looking at the gauge while driving. Numbers aren't going to exact like a computerized afr graph since they change so much.
Ill see if I can get some more numbers in the next few days.

 

dopes dumping the air by using the BOV minimizes the car to run lean? ( i figured it doesnt since the BOV is closed when the throttle is open)

 

Actually it makes it run rich for a split second when it dumps.

 

figures..