2ZR Turbo Yaris

[atomic_hoji]

Eeeeww - glad to hear it was short lived! Blech, stomach viruses are terrible..

Interested to hear what you think of the book overall when you get through it - I've heard very polarized reviews of it.

Sounds like Turbokits customer service is good - always a bonus to deal with a company that backs-up the product after the sale. Glad to hear the stock fuel system appears to be up to the task. re: FIC install - I guess in the worst case you hook-up the cam sensors and leave control to the stock ECM, as long as it doesn't cause signal noise or problems for the stock ECM then it was just an extra wiring step.

I'm not sure I'm on-board with the automatic rationale - not because I don't think the U340E can do it more the author's reasoning is a bit mis-placed I think - if the engine makes more torque (it better if it's got boost, lol) than stock, it does so in all gears. Comparing a turbo pull in second to a stock pull in first isn't really relevant - you're still going to use first gear with the turbo! lol Especially true in an automatic because you can't start in second gear. Maybe there's more context to the statement... I'm sure IPT would love to sell you a very expensive transmission, lol. The tech. specs from the ASE paper are probably pretty reliable, but more than likely conservatively biased toward daily driving and long-term reliability vs performance from an OEM point of view. The MWR experience is more real-world and good, but like anything, I'll bet your driving style will be the biggest factor. My gut feeling is start with a transmission cooler (since automatics don't live long with heat) and see how that goes. If you're finding issues then consider a shift kit or valve body upgrade.

Tracking is exciting!

Definitely keep us posted if you are going to make it out this way this summer.

Looking forward to unboxing, progress, and booooooost!
-- Adam

[06YarisRS]

Originally Posted by atomic_hoji

Eeeeww - glad to hear it was short lived! Blech, stomach viruses are terrible..

Interested to hear what you think of the book overall when you get through it - I've heard very polarized reviews of it.

Sounds like Turbokits customer service is good - always a bonus to deal with a company that backs-up the product after the sale. Glad to hear the stock fuel system appears to be up to the task. re: FIC install - I guess in the worst case you hook-up the cam sensors and leave control to the stock ECM, as long as it doesn't cause signal noise or problems for the stock ECM then it was just an extra wiring step.

I'm not sure I'm on-board with the automatic rationale - not because I don't think the U340E can do it more the author's reasoning is a bit mis-placed I think - if the engine makes more torque (it better if it's got boost, lol) than stock, it does so in all gears. Comparing a turbo pull in second to a stock pull in first isn't really relevant - you're still going to use first gear with the turbo! lol Especially true in an automatic because you can't start in second gear. Maybe there's more context to the statement... I'm sure IPT would love to sell you a very expensive transmission, lol. The tech. specs from the ASE paper are probably pretty reliable, but more than likely conservatively biased toward daily driving and long-term reliability vs performance from an OEM point of view. The MWR experience is more real-world and good, but like anything, I'll bet your driving style will be the biggest factor. My gut feeling is start with a transmission cooler (since automatics don't live long with heat) and see how that goes. If you're finding issues then consider a shift kit or valve body upgrade.

Tracking is exciting!

Definitely keep us posted if you are going to make it out this way this summer.

Looking forward to unboxing, progress, and booooooost!
-- Adam

Thanks Adam!

Turbokits does seem like a really good outfit. Jesse (the lead tech) seems like a very straight-talker, no nonsense and solution-focused kind of guy. I'd rather 'realistic' than 'accommodating'. He seems very optimistic about my project, though this one, I think, is a little different than anything that they have been involved in in the past. Suffice to say, I feel like I'm in good hands.

I like the Corky Bell book so far, but I'm really not that far into it. It seems to cover many fundamentals, so represents a good starting point for me, I suppose. If you have any recommendations for digitally available books/sources, as a general introduction to tubrocharger systems, I love to hear about them.

Yes, the Corky Bell statement about 1st and second gear - N/A vs Turbo doesn't really seem to hold much water. Of course, you are correct about boost being present in 1st gear as well as all gears. If anything, it tells me that if I want to preserve my transmission, maybe I ought not command full boost in 1st gear, lol! But, I suppose, that's common sense. I guess, in a large sense, I'm trying to convince myself - with or without valid data - haha, that I will be safe. Undeniably un-scientific, I know.

I thought about a transmission cooler, but without confirming that a cooler would not contribute to restricted flow, I'd have to do a bit more research first. I've read conflicting information about placement of a cooler (I just happen to have a tube and fin cooler in my garage, less effective than a plate and fin config) and whether it should be a) used without the stock in-rad cooler, 2) installed before the in-rad cooler or 3) on the return line. I know that cooling is very important, but my immediate concerns would be two: 1) slipping clutch packs under additional torque and 2) actually breaking hard parts, such as stripping a gear, or snapping an input or output shaft. On another note, you'd mentioned axles. Which, brings me to two questions for the YW community: 1) are axles likely to fail before transmission hard parts? And, 2) are the Scion xD axles a direct fit (lengths, spline count) with the auto? I'll dig back in the forums, but I think discussion around this topic was focused on the manual trans. EDIT: different input shaft spline count, xD 20 and Yaris 23.

Well, it seems that my packages are almost at their destination. Not sure if we'll get over this weekend to get them. But, I'd say that un-boxing isnt that far off.

I do have an immediate challenge to face right off the bat, sadly. It seems that the spring bolts that attach the midpipe to the stock exhaust manifold are stripped. When we worked at straightening out the exhaust in the school shop, we realized that the bolts would turn but not back out. I don't believe that they were over tightened on the install but maybe they were. Or, the wrong ones were installed. I left it for the time being as I had no exhaust leaks, but had planned to have the exhaust guys fix that when I went for the resonator - axleback pipe diameter upgrade. Not quite sure how I am going to approach this but it might look something like cutting my midpipe and then working the lot out from below. Whatever happens will have to happen in my garage as a trip to an exhaust shop isn't in the cards at the moment. The downpipe supplied with the kit, extends well beyond the stock converter anyway, and the converter/resonator section is going to have to be chopped up and rewelded anyway.

Last evening I spoke with the tech from BLP Automotive - my future tuner guys - about fueling. He also feels I should be fine at 6-7 psi, but that they have in-stock solutions, one of which is a voltage regulator module that bumps up the pump output by increasing voltage, plus a small selection of in-tank pumps. I would prefer, the latter, but he will advise at the time.

Once I receive the kit, I'll be sure to post up pics of some of the larger individual parts as well as a segment on my experience with clocking the turbo. Apparently, some arrive needing to be clocked.