RB20DET internal wastegate spring rate

[.:O4AGTZ:.]

Akanes spring idea does sound the best for the application this guy is aiming for.

It just seems like there is a much better way to go around this. As stated above by Sergei; the difference between 5psi and 7psi is really bugger all. Why would you not just switch to RB20DET ecu/map sensor etc? Sounds a lot easier.

the compression on these engines is not THAT high and in theory it can handle the boost. Either that or you are better off finding a chip that is rated to the same boost as factory RB20.

Just my opinion. Seems like there are a lot of ways to be going about this. Just seems that this chip is not the best idea.

[Akane]

My best guess is that he's getting the chip for free or really cheap.

[.:O4AGTZ:.]

My best guess is that he's getting the chip for free or really cheap.

Some of us were thinking it but you said it!

Seems a bit like they just want to say "nah itz been turb'd n computas bn chipd 2 handl th extra powa". Be able to do better "doughies" and have more wank wank im cool noises when you floor it haha.

Im sorry im being cruel and jumping to conclusions.

[bbq1988]

Seems a bit like they just want to say "nah itz been turb'd n computas bn chipd 2 handl th extra powa".

Barely anyone builds RB's right. Every second skyline/laurel/cefiro add on trademe has this in the auction!

It frustrates us who build things right and get put into the dodgey stereotype with those muppets.

[.:O4AGTZ:.]

Seems a bit like they just want to say "nah itz been turb'd n computas bn chipd 2 handl th extra powa".

Barely anyone builds RB's right. Every second skyline/laurel/cefiro add on trademe has this in the auction!

It frustrates us who build things right and get put into the dodgey stereotype with those muppets.

Haha i thought for a second i was going to get blasted for being a bit of a @#$% but you are absolutely right. All I can think of when I see most of them is that they are only just held together and that everything has been done on the cheap. A desperate attempt to be "cool" because your car is loud and does skids au!

[-Justin-]

My best guess is that he's getting the chip for free or really cheap.

Some of us were thinking it but you said it!

Seems a bit like they just want to say "nah itz been turb'd n computas bn chipd 2 handl th extra powa". Be able to do better "doughies" and have more wank wank im cool noises when you floor it haha.

Im sorry im being cruel and jumping to conclusions.

I'm not sum drug fuked muppet who writes in text language im a uni student that is a car enthusiast and enjoys building cars, i have helped members on this forum do their engine transplants and coil over installation as wel as a bit of expierence in other areas

Seems a bit like they just want to say "nah itz been turb'd n computas bn chipd 2 handl th extra powa".

Barely anyone builds RB's right. Every second skyline/laurel/cefiro add on trademe has this in the auction!

It frustrates us who build things right and get put into the dodgey stereotype with those muppets.

Haha i thought for a second i was going to get blasted for being a bit of a @#$% but you are absolutely right. All I can think of when I see most of them is that they are only just held together and that everything has been done on the cheap. A desperate attempt to be "cool" because your car is loud and does skids au!

extactly!!!!!!!!!!!!!I'm trying to do this build properly!I havn't got the chip for cheap or free im paying someone $200 to chip my stock ecu and wire in the chip properly. The reason i dont want to run stock rb20DET boost which is around 11 psi is becuase i am also going to be adding a 3 inch from turbo back which im pretty sure brings the boost up. I have been told that 12 psi is to much, i have seen one of these builds in action the guy is running 5psi on a rb20DE+T setup making 150KW at the wheels for a safe and reliable tune. I dont wana be a fukin muppet slap al this shit together and c how it goes want to do it properly want to lower my boost to a safe level i can always bring it up!

[Akane]

Some of us were thinking it but you said it!

Sad thing is, I (assume) know it because I've been through that stage too.

Just gotta learn the hard way, grow out of it I guess :/

[bbq1988]

Personaly i would spend abit more money and *sigh* put an external wastegate on it, then get a 5psi Spring. They solve so many issues

[.:O4AGTZ:.]

Yeah true.

Sorry Justin, was not having a go at you in particular, more at people that dont do things right. I think what you want to do is responsible (ie running it to the extent where you know it is safe) and you are taking the proper precautions.

[mjrstar]

this looks like an 'interesting idea..

http://www.toyotanation.com/forum/t126750.html

[sergei]

I havn't got the chip for cheap or free im paying someone $200 to chip my stock ecu and wire in the chip properly. The reason i dont want to run stock rb20DET boost which is around 11 psi is becuase i am also going to be adding a 3 inch from turbo back which im pretty sure brings the boost up. I have been told that 12 psi is to much, i have seen one of these builds in action the guy is running 5psi on a rb20DE+T setup making 150KW at the wheels for a safe and reliable tune. I dont wana be a fukin muppet slap al this sh*t together and c how it goes want to do it properly want to lower my boost to a safe level i can always bring it up!

So you are paying some one $200 for "chipping" which for some reason would only go up to 5psi. This sounds dodge to me.

Do you realise that running stock RB20DET is far better option?
Running stock ECU and RB20DET injectors will not make your car automatically run ~11psi. Normally there is bleed valve that raises the boost on factory vehicle from ~7psi gate pressure to 11psi, and drops it to 7psi as fail safe.

5psi tune sounds very questionable to me. Why the guy who is going to "tune" it does not make it "7-8psi tune"? Since he is going to tune it.
I speculate that he is going to leave stock N/A ecu since 5psi is marginal. I am very sceptical about "chipping", especially that the tune supposedly good only up to "5psi".
Does he going to put it on dyno?
Or what he really has is some EEPROM (unknown source) that he is going to stick in?

[shihad]

I havn't got the chip for cheap or free im paying someone $200 to chip my stock ecu and wire in the chip properly. The reason i dont want to run stock rb20DET boost which is around 11 psi is becuase i am also going to be adding a 3 inch from turbo back which im pretty sure brings the boost up. I have been told that 12 psi is to much, i have seen one of these builds in action the guy is running 5psi on a rb20DE+T setup making 150KW at the wheels for a safe and reliable tune. I dont wana be a fukin muppet slap al this sh*t together and c how it goes want to do it properly want to lower my boost to a safe level i can always bring it up!

So you are paying some one $200 for "chipping" which for some reason would only go up to 5psi. This sounds dodge to me.

Do you realise that running stock RB20DET is far better option?
Running stock ECU and RB20DET injectors will not make your car automatically run ~11psi. Normally there is bleed valve that raises the boost on factory vehicle from ~7psi gate pressure to 11psi, and drops it to 7psi as fail safe.

5psi tune sounds very questionable to me. Why the guy who is going to "tune" it does not make it "7-8psi tune"? Since he is going to tune it.
I speculate that he is going to leave stock N/A ecu since 5psi is marginal. I am very sceptical about "chipping", especially that the tune supposedly good only up to "5psi".
Does he going to put it on dyno?
Or what he really has is some EEPROM (unknown source) that he is going to stick in?

my understanding of this situation is
hes buying a chip for his 20de plus t from a guy/business who makes them (my understanding) he talked to a guy(customer) who had a chip from him and was running 150kwatw on 5psi on this setup justin wants reliablity and doesnt wana blow his motor up so probally wants to replicate that setup and aim lower rather than higher. the guy/business selling the chip is also offering dyno tunning as well.so the chip for all i know is good for above 5psi.

[sergei]

I havn't got the chip for cheap or free im paying someone $200 to chip my stock ecu and wire in the chip properly. The reason i dont want to run stock rb20DET boost which is around 11 psi is becuase i am also going to be adding a 3 inch from turbo back which im pretty sure brings the boost up. I have been told that 12 psi is to much, i have seen one of these builds in action the guy is running 5psi on a rb20DE+T setup making 150KW at the wheels for a safe and reliable tune. I dont wana be a fukin muppet slap al this sh*t together and c how it goes want to do it properly want to lower my boost to a safe level i can always bring it up!

So you are paying some one $200 for "chipping" which for some reason would only go up to 5psi. This sounds dodge to me.

Do you realise that running stock RB20DET is far better option?
Running stock ECU and RB20DET injectors will not make your car automatically run ~11psi. Normally there is bleed valve that raises the boost on factory vehicle from ~7psi gate pressure to 11psi, and drops it to 7psi as fail safe.

5psi tune sounds very questionable to me. Why the guy who is going to "tune" it does not make it "7-8psi tune"? Since he is going to tune it.
I speculate that he is going to leave stock N/A ecu since 5psi is marginal. I am very sceptical about "chipping", especially that the tune supposedly good only up to "5psi".
Does he going to put it on dyno?
Or what he really has is some EEPROM (unknown source) that he is going to stick in?

my understanding of this situation is
hes buying a chip for his 20de plus t from a guy/business who makes them (my understanding) he talked to a guy(customer) who had a chip from him and was running 150kwatw on 5psi on this setup justin wants reliablity and doesnt wana blow his motor up so probally wants to replicate that setup and aim lower rather than higher. the guy/business selling the chip is also offering dyno tunning as well.so the chip for all i know is good for above 5psi.

Ok, that makes more sense. I though he was scammed.

[-Justin-]

people have run this setup on more boost,I have heard of plus t's using this setup happily running 10 psi, i dont want to risk it he recomended i run it at 7psi for a safe and reliable setup, i want to start at 5 becuse im adding a 3 inch from turbo back which im not sure will affect my boost or not and if something isnt setup properly or it spikes for some reason i wont blow all my shit up like shiahd said

[phoenix]

With a 3" turbo back exhaust you might struggle to keep boost anywhere near 5psi - unless the internal wastegate has been enlarged or something.

[.:O4AGTZ:.]

With a 3" turbo back exhaust you might struggle to keep boost anywhere near 5psi - unless the internal wastegate has been enlarged or something.

that is another thing to consider. You are not going to know what kind of increase in boost the exhuast will have until you do it. what if it is too much for your liking?

[-Justin-]

With a 3" turbo back exhaust you might struggle to keep boost anywhere near 5psi - unless the internal wastegate has been enlarged or something.

that is another thing to consider. You are not going to know what kind of increase in boost the exhuast will have until you do it. what if it is too much for your liking?

yea i know thats y i was trying to get the boost as low as possible but a few people where like "just run it on 8psi itl b mint" and i knew that it wouldnt be with a 3inch form turbo bak, to overcome this im probably just going to run a standard rb20det exhuast cheaper and i know i wont have any problems