Originally Posted by IS200TFOWL

Yeah we are way past the 30% throttle limitation as TTI has elaborated on it multiple times. I said "Loving all the much needed engine/throttle tuning finally bringing it up to PAR..." everyone knows it would be a HUGE foul if Lexus made the is200t faster than the is350 right out of the box. Thanks for mentioning the water/air inter-cooler which is undisputed the best available. Not to mention the newer BMW M3 & M4 using the same water/air inter-cooler systems. I'm sure there's enough room but i highly doubt we'll need to upgrade in "size" unless your looking for ridiculously huge gains. I personally like the idea of having the exhaust manifold integrated, the four-into-two method helps with vibrations, balance, heat and an overall smoother engine however machining the inter exhaust manifold is possible but extremely expensive... I understand your not looking into tuning your 200t but they do have some nice window tint forums you can check out

Originally Posted by IS200TFOWL

TTI claims 3-4 psi over stock with the stage two reflash, sounds amazing! Loving all the much needed engine/throttle tuning finally bringing it up to par... I was looking into our internals aluminum alloy pistons, high-strength steel connecting rods, forged steel crankshaft and cast iron bore liners. Almost identical to the 328i (N20B20A) instead it appears the n20 uses a iron coated cylinder bore, they do this by electric arc wire spray. Different from our cast iron liners which are fused by irregular ('spiney type') surfaces on the casting exteriors providing better adhesion between the solid cast iron liners and cylinder block. Also the 328i is matching the 8arfts at 17 stock psi peak boost. A few other differences would be the bore and stroke, the 8AR FTS uses a 86.0mm bore and 86.0mm stroke whereas the 328i uses 84mm bore and 90.1mm stroke. The n20 crankshaft is made by die-casting steel which means its brought to a liquid state then cased into a mold, ill explain. Die-casting (liquefying) steel requires other metals like alloys such as aluminum, zinc, copper and magnesium which in theory gives you weaker' steel, not to mention porosity and cavity defects. In forging, steel is heated, often to very high temperatures, but remains solid then by physical force molded. Forgings can be made from steel and titanium that are not possible in die casting due to melt temperatures. We have basically the same internals however we have stronger solid cast iron bore liners, a more balanced bore x stroke, 1 extra cc and a stronger fully forged steel crank shaft. Super good, figuring most turbo engine platforms don't have forged internals, for example the Focus St. Some very reputable tuning companies involved with the 328I are pushing 6 psi boost over stock, with stock internals. It's going to be interesting seeing where we end up with the 8AR-FTS engine... Thank god we have TTI helping us!

Originally Posted by E46CT

Similar internals, same PSI, similar rated power, however our 8ARs are mountains slower. Is anybody still talking about the supposed 30% throttle limitation Lexus installed on the 200T for anything below 3k RPM? Anyone? TTI-- can you read this and comment on that? Or was that a false rumor someone posted?

Another challenge as some know will be upgrading the charge cooling (perhaps bigger liquid intercooler?--is there enough space?) and the turbo itself. It's integrated into the head so how do we get more flow. Time will tell =)

Note that the Chevy Cobalt 2.0 Turbo is also known to make MOUNTAINS of modded torque! One of its strong points is not only the beefy forged stuff, but also it uses very strong bolts that sandwich everything together. Overall I hope our platform is strong for extreme turbo mods. That would be awesome!

Though truth be told I will likely ride my car out stock!

Originally Posted by IS200TFOWL

TTI claims 3-4 psi over stock with the stage two reflash, sounds amazing! Loving all the much needed engine/throttle tuning finally bringing it up to par... I was looking into our internals aluminum alloy pistons, high-strength steel connecting rods, forged steel crankshaft and cast iron bore liners. Almost identical to the 328i (N20B20A) instead it appears the n20 uses a iron coated cylinder bore, they do this by electric arc wire spray. Different from our cast iron liners which are fused by irregular ('spiney type') surfaces on the casting exteriors providing better adhesion between the solid cast iron liners and cylinder block. Also the 328i is matching the 8arfts at 17 stock psi peak boost. A few other differences would be the bore and stroke, the 8AR FTS uses a 86.0mm bore and 86.0mm stroke whereas the 328i uses 84mm bore and 90.1mm stroke. The n20 crankshaft is made by die-casting steel which means its brought to a liquid state then cased into a mold, ill explain. Die-casting (liquefying) steel requires other metals like alloys such as aluminum, zinc, copper and magnesium which in theory gives you weaker' steel, not to mention porosity and cavity defects. In forging, steel is heated, often to very high temperatures, but remains solid then by physical force molded. Forgings can be made from steel and titanium that are not possible in die casting due to melt temperatures. We have basically the same internals however we have stronger solid cast iron bore liners, a more balanced bore x stroke, 1 extra cc and a stronger fully forged steel crank shaft. Super good, figuring most turbo engine platforms don't have forged internals, for example the Focus St. Some very reputable tuning companies involved with the 328I are pushing 6 psi boost over stock, with stock internals. It's going to be interesting seeing where we end up with the 8AR-FTS engine... Thank god we have TTI helping us!

Originally Posted by dsel909

can anyone tell me the differences of the down pipes tti offers? Thanks in advance sorry noob question lol

Originally Posted by E46CT

Similar internals, same PSI, similar rated power, however our 8ARs are mountains slower. Is anybody still talking about the supposed 30% throttle limitation Lexus installed on the 200T for anything below 3k RPM? Anyone? TTI-- can you read this and comment on that? Or was that a false rumor someone posted?

Another challenge as some know will be upgrading the charge cooling (perhaps bigger liquid intercooler?--is there enough space?) and the turbo itself. It's integrated into the head so how do we get more flow. Time will tell =)

Note that the Chevy Cobalt 2.0 Turbo is also known to make MOUNTAINS of modded torque! One of its strong points is not only the beefy forged stuff, but also it uses very strong bolts that sandwich everything together. Overall I hope our platform is strong for extreme turbo mods. That would be awesome!

Though truth be told I will likely ride my car out stock!

Originally Posted by Eclisse1

Hello

While I was just following the events, but now that my car has arrived, I ordered Tony from a stage 1 flash. I am in Europe in Hungary, thank you for the useful writings I have read here so far!

Originally Posted by IS200TFOWL

Yeah we are way past the 30% throttle limitation as TTI has elaborated on it multiple times. I said "Loving all the much needed engine/throttle tuning finally bringing it up to PAR..." everyone knows it would be a HUGE foul if Lexus made the is200t faster than the is350 right out of the box. Thanks for mentioning the water/air inter-cooler which is undisputed the best available. Not to mention the newer BMW M3 & M4 using the same water/air inter-cooler systems. I'm sure there's enough room but i highly doubt we'll need to upgrade in "size" unless your looking for ridiculously huge gains. I personally like the idea of having the exhaust manifold integrated, the four-into-two method helps with vibrations, balance, heat and an overall smoother engine however machining the inter exhaust manifold is possible but extremely expensive... I understand your not looking into tuning your 200t but they do have some nice window tint forums you can check out

Originally Posted by TTITony

Hi E46CT

Thank you very much for your comments.
Regarding the throttle limitation we found different cars even MY16 and 17's 8AR has different rate of ECU data especially NX200T and RX200T FWD version, our team try to make throttle and pedal running approaching 1:1 but that is a target value, Although we are not doing the best, but our team is trying to achieve the best reactivity.

Basically our stage 2 we are optimization the water/air intercooler's water pump high speed running point to earlier improve and reduce when boost up intake air temperature keep the best cooling performance.

Sorry my English very poor I hope you can understand what I mean.

Originally Posted by E46CT

Oh ok I see -- so your team is working on removing the restriction. So it's not resolved yet--got it. Thanks!

Originally Posted by john55657

Sweet!

I have a few questions:
-Once the stage 2 is done on the IS (downpipe and ECU) do you have a upgrade for stage 3? Like special price for it?
-What will stage 3 consist of? Will we be able to put in 91 oct. in stage 3? How much boost are we talking?

Asking all these questions because I wanna keep it a daily driver, I have a 800hp supra, and don't get it out of the garage anymore, I am getting old :P

Originally Posted by Sheddy

I am sure there will be special pricing for those looking to upgrade their ECU file (eg. Stage 1- Stage 2) the customer will just have to spend the money on the hardware that is needed for the upgrade. As of now, Stage 3 is in the works, but from what i heard it is going to be upgraded OEM turbo internals (Tony can shed more light on this) . Also the tunes are compatible with 91 and 93 oct.

Originally Posted by john55657

That sounds like something worth waiting for! I have a standalone EMS on my other car, and I do not want to go back there lol I am happy they are spending time on this!