Tomioka Racing TD06-20G
I tune in very small increments in order to make a perfect tune and not hurt my motor, so it might be another week or two, or three, until final numbers are ready to be posted. I can tell you thus far, it looks promising.
One thing to note, the 18psi wastegate that came with the turbo is not built all that well. It is indeed an 18psi spring as I verified by backing my MBC all the way out, but good luck when trying to set the preload. I ended up grinding off a few teeth from the wastegate arm in order to make it shorter. It took a little effort, but now all is well. (And I gained 25ft lbs the second time around.)
With that said, spool-up in 3rd gear during WOT operation is damn near exact with my stock manifold, stock o2 housing, and stock turbo setup. I'm still well below the 26psi spike from my last tune, BUT the torque curve is more over to the right of the graph. Torque used to peak around 4300 to 4800 rpm(boost spike) and is now around 4750 to 5250 rpm. Could this change once I add more boost? Possibly. But, I don't see it being as good as stock.
I've given up on 5th on the highway. Passing someone now requires 4th gear. Unless you're allready coasting at 80mph, the turbo wants to surge. I don't mean it does surge, but it wants to. As soon as throttle is applied, it seems to go into a steady state. The turbo starts hissing loud, but the car doesn't move. The comp cover is doing its job as there is no bucking or bulging or BOV noises, but there is no acceleration either. 4th gear is the same, but only below 3000rpm. (I'm going for a long highway drive tomorrow to Mitsu Day at Raceway Park so i'll have a better feel for it then.)
During normal driving, you can tell that the turbo is not stock because there is a slight lag. You can acheive the same acceleration, but it takes a few more percent on the throttle. Not a lot, but a little more. Someone who doesn't regularly drive an Evo 8 might not be able to tell the difference.
My quest for 400whp on 93 octane is still well on its way. At this point, it seems promising and I am still happy with my purchase. I'll post up some current numbers when I have more solid information.
One thing to note, the 18psi wastegate that came with the turbo is not built all that well. It is indeed an 18psi spring as I verified by backing my MBC all the way out, but good luck when trying to set the preload. I ended up grinding off a few teeth from the wastegate arm in order to make it shorter. It took a little effort, but now all is well. (And I gained 25ft lbs the second time around.)
With that said, spool-up in 3rd gear during WOT operation is damn near exact with my stock manifold, stock o2 housing, and stock turbo setup. I'm still well below the 26psi spike from my last tune, BUT the torque curve is more over to the right of the graph. Torque used to peak around 4300 to 4800 rpm(boost spike) and is now around 4750 to 5250 rpm. Could this change once I add more boost? Possibly. But, I don't see it being as good as stock.
I've given up on 5th on the highway. Passing someone now requires 4th gear. Unless you're allready coasting at 80mph, the turbo wants to surge. I don't mean it does surge, but it wants to. As soon as throttle is applied, it seems to go into a steady state. The turbo starts hissing loud, but the car doesn't move. The comp cover is doing its job as there is no bucking or bulging or BOV noises, but there is no acceleration either. 4th gear is the same, but only below 3000rpm. (I'm going for a long highway drive tomorrow to Mitsu Day at Raceway Park so i'll have a better feel for it then.)
During normal driving, you can tell that the turbo is not stock because there is a slight lag. You can acheive the same acceleration, but it takes a few more percent on the throttle. Not a lot, but a little more. Someone who doesn't regularly drive an Evo 8 might not be able to tell the difference.
My quest for 400whp on 93 octane is still well on its way. At this point, it seems promising and I am still happy with my purchase. I'll post up some current numbers when I have more solid information.
Last edited by BigT; Oct 14, 2011 at 08:56 PM.
Another update in regards to the 5th gear "issue" I was having. It must have been in my head, but the car drives perfectly fine in 5th. It does require some precise throttle modulation, but once boost creeps passed 5psi, it actually pulls quite nicely. I ran a few short 5th gear pulls, probably around 30% throttle, and at 60mph it seems a little doggish, after 70mph it pulls rather nice. I was actually a little surprised and was not paying attention to the fact that I was now going 90mph. I was thinking about it thereafter, and even my stock turbo struggled on that huge uphill stretch of highway near my house. Again, this does take precise throttle control. Too much and it goes it a surge like state and the BOV starts open and closing slightly. Too little and you're not moving. Get it just right and it responds rather well.
I have the Tomei ARMS turbo and manifold. I had to take off the expreme manifold for smog. I noticed with the stock manifold on, boost on the lower gears hit a lot faster. The expreme manifold seems to not hit as hard in low gears, but there is way more room to go into the upper RPM band with it on. I think you will notice the same things between the two, as they are fairly similar setups.
The Tomei and your turbo is physically a lot bigger than the 8&9 turbos, I also noticed they like big intercooler/piping and little restriction in the exhaust path as well. Good luck on your goals. I would think you would hit 400hp with 24 psi. on 93 octane.
N
The Tomei and your turbo is physically a lot bigger than the 8&9 turbos, I also noticed they like big intercooler/piping and little restriction in the exhaust path as well. Good luck on your goals. I would think you would hit 400hp with 24 psi. on 93 octane.
N
I have the Tomei ARMS turbo and manifold. I had to take off the expreme manifold for smog. I noticed with the stock manifold on, boost on the lower gears hit a lot faster. The expreme manifold seems to not hit as hard in low gears, but there is way more room to go into the upper RPM band with it on. I think you will notice the same things between the two, as they are fairly similar setups.
The Tomei and your turbo is physically a lot bigger than the 8&9 turbos, I also noticed they like big intercooler/piping and little restriction in the exhaust path as well. Good luck on your goals. I would think you would hit 400hp with 24 psi. on 93 octane.
N
The Tomei and your turbo is physically a lot bigger than the 8&9 turbos, I also noticed they like big intercooler/piping and little restriction in the exhaust path as well. Good luck on your goals. I would think you would hit 400hp with 24 psi. on 93 octane.
N
I never ran this turbo on the stock manifold, so I can't compare. However, as the tuning is coming along, my low end torque curve is looking very similar to my stock turbo.
24 psi is not enough for 400whp. I can guarantee that at this point. I'm changing my tuning style a little and going for more boost/less timing. So far so good.
I have the Tomei ARMS turbo and manifold. I had to take off the expreme manifold for smog. I noticed with the stock manifold on, boost on the lower gears hit a lot faster. The expreme manifold seems to not hit as hard in low gears, but there is way more room to go into the upper RPM band with it on. I think you will notice the same things between the two, as they are fairly similar setups.
The Tomei and your turbo is physically a lot bigger than the 8&9 turbos, I also noticed they like big intercooler/piping and little restriction in the exhaust path as well. Good luck on your goals. I would think you would hit 400hp with 24 psi. on 93 octane.
N
The Tomei and your turbo is physically a lot bigger than the 8&9 turbos, I also noticed they like big intercooler/piping and little restriction in the exhaust path as well. Good luck on your goals. I would think you would hit 400hp with 24 psi. on 93 octane.
N
I'll pm you the rest, I don't want to go off topic in this thread.
N
Time for some numbers.
Blue line: Current state of tune.
Dark Green line: Pull from last night.
Light Green line: My best stock turbo pumpgas pull with 26.5 psi spike.(don't mind how lean it is, I was testing something out)
93 Octane, 26.5psi, 1 single count of knock at around 3800rpm.
This is a pull from last night. I started this pull a tad bit earlier and wanted to put it up to reflect how similar the low-end torque is to my stock turbo. Nearly identical!
My tuning is done for now. I am happy with the numbers. There was no knock after 4000 rpm in any of my tuning pulls so i'm sure there is a little bit more left in it. I picked up an HKS 272 intake cam to replace my current 264 cam and will be swapping them in two weeks. I'll do a quick re-tune then and post results. I hope the larger cam cures that drop in power up top.
I am very pleased with how the turbo is running. Full boost seems to come right around 3900rpm. I guess the only thing I have to worry about now is reliability. I run Mobil 1 5w40 turbo deisel motor oil with a bottle of Lucas zinc additive. The turbo probably has 500 miles on it since being installed (and oil changed) and i've been checking shaft play every few days. All is well thus far. Wish me luck!
Blue line: Current state of tune.
Dark Green line: Pull from last night.
Light Green line: My best stock turbo pumpgas pull with 26.5 psi spike.(don't mind how lean it is, I was testing something out)
93 Octane, 26.5psi, 1 single count of knock at around 3800rpm.
This is a pull from last night. I started this pull a tad bit earlier and wanted to put it up to reflect how similar the low-end torque is to my stock turbo. Nearly identical!
My tuning is done for now. I am happy with the numbers. There was no knock after 4000 rpm in any of my tuning pulls so i'm sure there is a little bit more left in it. I picked up an HKS 272 intake cam to replace my current 264 cam and will be swapping them in two weeks. I'll do a quick re-tune then and post results. I hope the larger cam cures that drop in power up top.
I am very pleased with how the turbo is running. Full boost seems to come right around 3900rpm. I guess the only thing I have to worry about now is reliability. I run Mobil 1 5w40 turbo deisel motor oil with a bottle of Lucas zinc additive. The turbo probably has 500 miles on it since being installed (and oil changed) and i've been checking shaft play every few days. All is well thus far. Wish me luck!
Last edited by BigT; Oct 18, 2011 at 05:33 AM.
I plan on going to the track at least one more time before the year is over. My car is a little heavy, SSL, but i'm hoping for high teens trap speed and somewhere in the 11's.
Last edited by BigT; Oct 17, 2011 at 09:38 PM.
Can a mod change my thread title to "Komak TD06SL2 20G Review" or split this thread and change the title? I don't want people to get confused with the turbo that MAP is selling.