is it safe to run 7 psi to a 9.5 psi?
do i need internal?

is any one run 9.5 without internal just tune by dyno?

 

Yes (no warranty anymore though)
No


No, no tuning is needed

 

You'll still need a reflash due to the Supercharger.

 

Do you think not having the reflash made my engine blow?
i drive for 2day and check my oil and see smoke comeing out form the dip stick.
I was thinking that 9.5psi is too much for the engine or could it be just the reflash the made my engine blow?

 

I just think you're one of those that got a bad batch of bearings

 

If you installed the TRD SC without the reflash, don't expect your engine to last very long - even with stock boost. I've read about several people who drove their SC'd TC's without the reflash, and there were detonation problems all over the place.

 

Yes, 100% not having the reflash made your engine go. Most likley you cracked your ring lands on your pistons from detonation.

 

how do people drive without a reflash if it was installed by the dealer? are these only people who installed it by themselves?

 

Not all dealers have the TRD ECU reflash tool. It says in the very beginning of the SC manual that it's required. Some just do the install anyway thinking it's not a big deal.

But it is.

 

Technically you can drive it just fine without the reflash. Pending you never get on it or go into boost at all which can mean the end of the engine quickly. And anyone that says they installed the sc without the reflash, blew there engine and said they never went into boost is full of crap haha!

And if you bought the nst 9.5 psi pulley and never had the reflash, that is certain death in a flash for your engine in VERY short order. With the reflash, no problem. Timing is yanked, fuel map is heavily altered and all is good!

 

have there been side by side test to prove the reflash adjusts the fuel curve ? I dont see how the s/c blows engines and the zpi stage zero doesnt . unless the s/c is very in efficient ??? I wish someone could give concrete info on everything the reflash does .

 

Doesn't the ZPI0 have a piggyback ECU?

 

not that I have heard.

 

Well, if that's the case, then it makes sense why today's turbo kits grind TC internals into mincemeat

 

If you decide to get a pulley I still have the ZPI Stage O and Stage 1 that they never released. Stage 0=9lbs 1=11lbs. $50 bucks for either one.

https://www.scionlife.com/forums/vie...629&highlight=

 

I already have the NST 9.5, and don't plan on going any higher without significant internal upgrades. My daily driver cannot fail me

 

Ive never heard of this .....


nice avatar

 

I assume you meant this: ;)


That's what I don't understand also. Why aren't the turboed motors self destructing, while the S/Ced motors are trashed in 10 minutes without a flash. The turbo kits don't flash anything... weird.

 

Oh, I just haven't heard about a "reliable" turbo'd daily driver.... As for why the SC motors are going belly up without the reflash, I doubt anyone on these forums can say with absolute certainty - at least not without knowing exactly what's in the reflash bit for bit.

A lot of people think they can just bolt on a turbo, boost all day and have no problems. I can't see how that could POSSIBLY be the case. Take the ZPI kit for instance. They warn you right off the bat that you could potentially throw a CEL that isn't correctable with their oxygen sim.

I can only assume that since you have to swap out the exhaust mfd that you aren't going to pass emissions inspection in a lot of states - much less CARB.... Oh, and of course, you gotta get gauges to monitor boost, wideband o2, etc....

When I look at that laundry list, i'm turned off. Sure, the gains are attractive. But I want simplicity. You don't just slap on these turbo kits and go. There's a lot of little hidden gotchas with these kits that a lot of people fail to take into account - especially on a daily driver.

 

how much is the reflash tool? and where can you get one? i got my s/c installed at the dealer and the s/c does come with a s/c reflash correct?