I have not, the car is only at 103K miles, I just can't accept that there would be Valve wear on a car with this low mileage. 203k miles would be a different story.

I was out of the country for a week, and left the car at my shop and had my mechanics muck around with it and see what they could see, but the problem stopped. We ran Toyota Diagnostics and everything was fine, the software picked up something it didn't like, but I'm just assuming that was the tune. I tried to drive the car to recreate the problem for them to hear and it just would not do it. The car would get choppy and hesitant for like half a second, but then go back to normal. There is however still an interesting hollow sound coming from bank 2. It is so faint it could be anything really, I'm still leaning towards it being related to the valves and that that is what is causing the engine to stutter, but i'm not positive. I tried to record the sound but you can't hear this one on recordings.

I was running 5w30 synthetic BLEND. I am now running 5w30 FULL Synthetic oil, so we'll see if that slips along better. I'm wondering if the standard oil was too viscous and the hydraulic lifter got drained when moving at 7,200 RPM.

 

Correction on my end -- TUNED TO 7200 -- so I highly doubt it was from mechanical engine components moving too fast.

 

Does your shop have access to a bore scope to look over the piston tops and valves?

 

I'll check on that. The car started running fine again, then got it back to my house and it started acting up again. Misfire code however is now on Cylinder 3! So we have both Bank 1 and Bank 2 symptoms.

 

I missed the 'launched at 1200 rpm' post. Usually what I hear for an optimal launch is between 2000 and 2500, which could potentially decrease the times even more. This could make a 0-60 time of 4.5 seconds or less. So much excitement. I guess I bought my 350 at about the right time lol.

Everything you're saying though leads me to believe that transmission tune is going to have a much bigger impact on the feel and acceleration of the car to the point where I almost cannot wait. This is really great to hear. Let us know how that 1/4 mile launch next month goes. Lets pray for 12s.

 

I'm hoping it does deliver anything above 10whp (overly enthusiastic me is hoping for 15whp) otherwise it is just much cheaper to get the F-Sport intake and live with the 5whp and the added sound. $600+ for an intake must have some additional benefit to it otherwise it really isn't worth it. Even if it does make 8whp I think I'd save my money and get the F-Sport intake.

Side note: With all the tuning and modifications to the drivetrain, is it possible that PPE headers will add more than the 16whp as advertised?

 

Yeah but problem with my car is I can't launch above that. I get wheel spin which is bad for 0-60. Even people with better tire setups than me can't manage to do much better...

​​​​​Oh and also some good news for you guys! Im getting dyno'd today and should have results up later on today

 

I think that 600$ includes a stage 2 tune? I know the pricing doesnt make sense but Who knows.

 

I'd hope so. Unless that intake makes more than 10hp it isn't worth it. If it comes with a tune though that is a steal.

I see. Hopefully if you launch it on a prepped 1/4 mile track you can launch at a higher RPM. Hoping for 290+ on the dyno!

 

If you visit their site the $600 intake is the cold air version that is likely longer. I have made my own intake that is similar to what is pictured on their website and there was a 2-3% difference in the maf reading vs the oem setup. This translates to ~5-8hp of more air while within the stock rev limit. I would not be surprised if the intake was be worth ~10hp by 7400rpm with an adequate exhaust setup. I don't think it is necessary to have a cold air intake on our cars, I made a heat shield that accepts the oem inlet from the front of the car and the intake temperatures didn't vary much from ambient temps unless I sat at a light or something for a while. If I am not too busy on the next warmer day I might do a back to back comparison with the oem intake vs what I have (which looks similar to what OVT wants to sell) to see how big the difference is in the higher RPMs.

 

Sorry guys no luck on the dyno. Tuner lagged on me

 

man, i wanted to know the result!

 

I saw the thread on your home-made CAI. Very impressive work! The OVTuned CAI looks to me like it has a larger tube though, so that's why it needs their special tune for the a/f correction. Combining the cooler air, larger tube and a tune, I think it can make 10hp or more gain but have to see some dyno results before I would buy one. It's also interesting to see the difference in power gain among the 3 versions that they have.

 

They are using a larger maf housing which will require a tune as the maf reading will be off. I am pretty sure the larger tubing wont matter though as when I was playing around it appeared that the oem air box was the restriction before the zip tube. I don't think the car needs the bigger tube, it just won't hurt anything.

 

Has it been released yet? I checked their Facebook page but didn't find much...