Iwan
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- Joined
- Mar 28, 2011
- Messages
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Ive been away for quite a few days and know a bit about tuning the 1kzt.
Generally with this conversion you shouldn't ever see the red turbo light. It is telling you that the turbo is working too hard. . Either the inlet side or the exhaust side. I read that you have a cone filter on the inlet so that's good and no restriction.
On post 35 you say that you have a "bike race can" on the exhaust? Is it still there?
Generally bike race cans are small diameter pipes designed for small engines. Is it like this?
If its too small and restricted the outlet turbine on the turbo is under real strain.. hence the red light. Also this restriction is raising the egt's.
Remember if your pushing high pressure in... you really need the outlet exhaust to follow suit. Free flow in and definitely free flow out!
Back in 2009 I made a stainless steel 3" side exit exhaust. 3" dump pipe straight off the turbo and made a flange too.

This is part of it a few years later on. When the 4runner engine died from too much boost and over fueling! It did fly and did over 110mph!! It's from a toyota granvia.
You can see the new turbo flange and the 3" pipework. Also there's a egt probe tapped in pre turbo, to prevent what happened to the previous engine.
You can get all the 3" stainless exhaust components from Demon Tweeks and they are Jetex brand. You could probably get away without the silencer to save a few dollar. But for a bit more noise!


It was quite easy to put together, but needed a bit of modification after after a few 1000 miles.
Hope the info helps
Generally with this conversion you shouldn't ever see the red turbo light. It is telling you that the turbo is working too hard. . Either the inlet side or the exhaust side. I read that you have a cone filter on the inlet so that's good and no restriction.
On post 35 you say that you have a "bike race can" on the exhaust? Is it still there?

Generally bike race cans are small diameter pipes designed for small engines. Is it like this?
If its too small and restricted the outlet turbine on the turbo is under real strain.. hence the red light. Also this restriction is raising the egt's.
Remember if your pushing high pressure in... you really need the outlet exhaust to follow suit. Free flow in and definitely free flow out!
Back in 2009 I made a stainless steel 3" side exit exhaust. 3" dump pipe straight off the turbo and made a flange too.

This is part of it a few years later on. When the 4runner engine died from too much boost and over fueling! It did fly and did over 110mph!! It's from a toyota granvia.
You can see the new turbo flange and the 3" pipework. Also there's a egt probe tapped in pre turbo, to prevent what happened to the previous engine.
You can get all the 3" stainless exhaust components from Demon Tweeks and they are Jetex brand. You could probably get away without the silencer to save a few dollar. But for a bit more noise!


It was quite easy to put together, but needed a bit of modification after after a few 1000 miles.
Hope the info helps

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