Scion XB 1NZ-FE Turbo build

[cdydjded]

Well first of all it why would you think that you could compare NA vs Boosted on a dyno sheet? HP comes in very differently between the 2. Also he has an aftermarket intake manifold & a ported head with stock cams. Im not going to speculate on why his dyno looks the way it does. I congratulate him on his efforts.

[Nexus1155]

Unless that stuff was hurting the flow or restricting it, wouldn't it promote power in the higher revs since you are making it easier for the motor to breathe? especially when still using stock cams?

[xnamerxx]

Seeing as his dyno looks like any other dyno with a maxed out turbo Im going to go out on a limb and say he maxed his turbo out.

The fact that just because your car has air being forced into it doesn't mean your dyno curves will looks drastically different. All your doing is compressing air in a given space. The engine will still consume the air as it would in N/A form. If you look at any car be it PD induction or turbo the peak power is still the same as it would be N/A as long as the boost levels are held until the power adder is maxed out on its induction.

Im not going to sit here and congratulate a guy on making power when its obvious to anyone who knows anything about engine tuning when there are clear problems. In the end do I care if this guy blows his motor no but when people believe his setup is normal and good then more people will continue on the wrong path of how to setup a motor adding more noise for people who are looking to get the right info.

[cali yaris]

It's xbgod's thread, to "share with the community" this build and the results. I've asked my questions, so I'm done for now. If the answers get posted, I think that will be valuable to all of us.

[cdydjded]

xnamerxx : Seeing as his dyno looks like any other dyno with a maxed out turbo Im going to go out on a limb and say he maxed his turbo out.
I have to agree with you on that, Garrett claims max HP on that turbo to be 360HP
http://www.turbobygarrett.com/turbob...S_739548_1.htm

The fact that just because your car has air being forced into it doesn't mean your dyno curves will looks drastically different. All your doing is compressing air in a given space. The engine will still consume the air as it would in N/A form. If you look at any car be it PD induction or turbo the peak power is still the same as it would be N/A as long as the boost levels are held until the power adder is maxed out on its induction.
Id have to completely disagree on this. Manifold runner size, plenum size & what work is done will dramatically affect the power curve


Im not going to sit here and congratulate a guy on making power when its obvious to anyone who knows anything about engine tuning when there are clear problems. In the end do I care if this guy blows his motor no but when people believe his setup is normal and good then more people will continue on the wrong path of how to setup a motor adding more noise for people who are looking to get the right info

As for the above comment, this is the first time the car is dyno'd with the current combo. Iv never seen a car come out of the box with no issues. Im sure if he feels changes need to be made to correct the so called "lean issue" he will fix them.

[cdydjded]

Originally Posted by cali yaris

It's xbgod's thread, to "share with the community" this build and the results. I've asked my questions, so I'm done for now. If the answers get posted, I think that will be valuable to all of us.

BTW, what are the questions you are waiting answers for? And who are you waiting for to answer them?

[cali yaris]

^ read the thread. You've already said you can't answer them and don't want to speculate, which is fine.

[cdydjded]

Originally Posted by cali yaris

^ read the thread. You've already said you can't answer them and don't want to speculate, which is fine.

THX for answering my 2 question so clearly......

[cali yaris]

You're welcome!

[Yoda]

Xb has turned ghost....

[cdydjded]

Originally Posted by Yoda

Xb has turned ghost....

I would too considering the hostility in this thread....

[xbgod]

No ghost, just out having a little fun and had to fix an exhaust leak.

I see I missed alot in past few days, holy-crap.

Remember I don't use VVTI so that has some play in what your reading. Also the XB starts to fall on it face at around 5000-5200 RPM. Paul at Dezod can even tell you this. It's just the way it is. As far as being lean My car likes it there. It dosen't detonate and pulls like a beast. More than likely because of my 107 octane and M1 meth.

All is well so I hope this helps, if not sorry..........I'm running'em down and enjoying the car.

You guys can keep running your own senarios and speculation, it happens especially on forums.

Thanks to all that have followed me.

XBG

[cdydjded]

Originally Posted by xbgod

No ghost, just out having a little fun and had to fix an exhaust leak.

I see I missed alot in past few days, holy-crap.

Remember I don't use VVTI so that has some play in what your reading. Also the XB starts to fall on it face at around 5000-5200 RPM. Paul at Dezod can even tell you this. It's just the way it is. As far as being lean My car likes it there. It dosen't detonate and pulls like a beast. More than likely because of my 107 octane and M1 meth.

All is well so I hope this helps, if not sorry..........I'm running'em down and enjoying the car.

You guys can keep running your own senarios and speculation, it happens especially on forums.

Thanks to all that have followed me.

XBG

Well there you go, 1 reason (the biggest) for the difference in HP is that he is NOT using the VVTI. So in essence you cant compare a NA dyno that uses VVTI to his....

[H3LlIoN]

I'm gonna chime in...I don't think any of the heavy 1nz hitters are running VVT-I, AFAIK, mostly because of A) Some standalones don't offer control modules yet (I can vouch for that) and B) from earlier speculation in this same thread by Aras and others, at a certain point it becomes a hindrance as opposed to a power builder. (Which doesn't make sense to me, but whatever...I don't have a 350hp 1nz to play with and speak from experience.)

Also, I'm currently picking my nose and drinking a miller light. I may or may not have already consumed a number of long island iced teas.

[H3LlIoN]

Also, this post got pushed to the side and I was hoping for some speculation from Aras. Thanks

Originally Posted by H3LlIoN

Sweet numbers. Curious...what are you hoping to run at the track? What were your E.T.'s on the old build?

[H3LlIoN]

Originally Posted by cdydjded

Well there you go, 1 reason (the biggest) for the difference in HP is that he is NOT using the VVTI. So in essence you cant compare a NA dyno that uses VVTI to his....

And in regards to this, I highly doubt that Garm is comparing an NA dyno to Aras'....I think he's more comparing his non-vvt-i turbo set up.

[cali yaris]

All I did was ask two questions. (1. Why does it stop making power at 5200, and why was it tuned that lean). I was called a hater and now hostile. I haven't said a critical thing about the build or the tune. Lame.

Also the XB starts to fall on it face at around 5000-5200 RPM.

I asked why, it was just a question. Art's didn't (280whp). Mine doesn't (357 whp). So, that question remains unanswered. "That's just the way it is" is not a useful answer.

The second question really belongs with the tuner, as he seems to be the only one who can answer it. "It likes it there" is great to hear, but again is not a useful answer IMO.

xbgod, you got great numbers. (I already said that). If you're not curious about the why of these things, that's fine, it's your project of course!

[H3LlIoN]

Originally Posted by cali yaris

All I did was ask two questions. (1. Why does it stop making power at 5200, and why was it tuned that lean). I was called a hater and now hostile. I haven't said a critical thing about the build or the tune. Lame.



I asked why, it was just a question. Art's didn't (280whp). Mine doesn't (357 whp). So, that question remains unanswered. "That's just the way it is" is not a useful answer.

The second question really belongs with the tuner, as he seems to be the only one who can answer it. "It likes it there" is great to hear, but again is not a useful answer IMO.

xbgod, you got great numbers. (I already said that). If you're not curious about the why of these things, that's fine, it's your project of course!

Hater.