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My mr2 project


CJ

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I've just purchased a Forge uprated CT20B wastegate. It is fully adjustable so I can run any pressure I want - within reason :D

 

And, at a damn good price too ;)

I am led to believe that this now negates the need for a boost controller?

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What is the benefit of the forge wastegate? I didn't realise the CT20b had an external wastegate, never heard of the mod before :)

 

Apparently (and obviously this is what was reported to me) -

 

The benefits are better boost control and spool up, and if required, more boost!

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Bitch :tongue:

 

Lol, you should have asked bud.

 

The benefits are better boost control and spool up, and if required, more boost!

 

I can't for the life of me imagine how you would get better boost control with a spring over using an electronic pressure sensor with solenoid controlling the wastegate. IMO using the electronic boost controller will get you the best boost control available.

 

A wastegate spring will always start to waver before hitting the desired boost. If your level is 1.0bar, your spring will start to compress before opening all the way. This means that the boost will be leaking before hitting peak which means it will actually spool later. Using an EBC with gain feature is the best way, as far as boost control goes, to get the turbo to spool quicker and with more oomph.

 

With regards to more boost, the wastegate has no relevance to how much boost the turbo can take. This is always down to the efficiency of the turbo and just exactly how fast it can spin without blowing up.

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I'm not listening - I'm not listening :music:

 

:D

I have still got this, Chap that brought it from me returned it as he did not know how to make it fit, it needs a bit of wiring and vac pipes etc, if you are interested you can have it, if your mechanic can fit it you can pay me some money if he can not you dont pay me anything and send it back

 

image

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I have still got this, Chap that brought it from me returned it as he did not know how to make it fit, it needs a bit of wiring and vac pipes etc, if you are interested you can have it, if your mechanic can fit it you can pay me some money if he can not you dont pay me anything and send it back

 

http://i705.photobucket.com/albums/ww54/tooquicktostop/SV201996.jpg

PM coming your way

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Is this what I bought? Is an actuator what he called a wastegate?

 

http://www.forgemotorsport.co.uk/content.asp?inc=product&cat=&product=FMACGT4

 

No, the actuator controls the wastegate. As I thought the wastegate on the CT20b is actually an internal WG. The actuator that you have linked to controls when it is opened and closed.

 

I would just get your money back if I was you Col.

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...I would just get your money back if I was you Col.

That could be a problem as I agreed to buy it and I am a bit old school in as much as I always work on the premise that a deal is a deal. It was not crazy money at £50 so I might just have to take this one on the chin.

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That could be a problem as I agreed to buy it and I am a bit old school in as much as I always work on the premise that a deal is a deal. It was not crazy money at £50 so I might just have to take this one on the chin.

 

 

I am the same, but if the seller has told you a lot of tosh in order to punt his wares then I would say the rule book goes out of the window. I would never let someone down if a product did what they said it did.

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Well, hold on.

 

That Forge actuator only has a single port output on it, direct to the wastegate. Boost control solenoid sits inbetween. The stock one has two ports. One does the same - goes to the wastegate, the second port goes to the VSV for the cold weather boost adjustment - and when you fit a Boost Controller, it's a best practice to seal it up.

 

I'd keep the forge actuator with a 1bar setting on it, Col - then use the Boost Controller to run it up to 1.25bar.

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Well, hold on.

 

That Forge actuator only has a single port output on it, direct to the wastegate. Boost control solenoid sits inbetween. The stock one has two ports. One does the same - goes to the wastegate, the second port goes to the VSV for the cold weather boost adjustment - and when you fit a Boost Controller, it's a best practice to seal it up.

 

I'd keep the forge actuator with a 1bar setting on it, Col - then use the Boost Controller to run it up to 1.25bar.

 

Yeah it will definitely do the job but it won't make any difference to it's operation. It's like paying £50 to enter a different door to a free museum.

 

Sorry of the ridiculously random analogy by the way lol.

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