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Borg warner efr 7670 twin scroll internal wast gate
Hi, has anyone had one of these ? ive spoken to an engine tuner today who said it was hard to map so just wanted to hear if anyone has had any experience with one. Any mappers out there with any info? Thanks |
The mapping is no different to any other turbo, it’s making it fit that’s more of a challenge as nobody makes anything off the shelf to fit. My mate ran an efr7064 twin scroll on his car. Made 500bhp and fullboost by 3500.
Custom T3 twin scroll up and downpipe fabrication was needed to make it fit https://cimg9.ibsrv.net/gimg/www.sco...6630f9eda.jpeg https://cimg0.ibsrv.net/gimg/www.sco...a05aa2b8ec.png |
Originally Posted by B9SLJ
(Post 11993613)
The mapping is no different to any other turbo, it’s making it fit that’s more of a challenge as nobody makes anything off the shelf to fit. My mate ran an efr7064 twin scroll on his car. Made 500bhp and fullboost by 3500.
Custom T3 twin scroll up and downpipe fabrication was needed to make it fit https://cimg9.ibsrv.net/gimg/www.sco...6630f9eda.jpeg https://cimg0.ibsrv.net/gimg/www.sco...a05aa2b8ec.png |
pole position Willenhall junc 10 m6
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Originally Posted by B9SLJ
(Post 11993613)
The mapping is no different to any other turbo, it’s making it fit that’s more of a challenge as nobody makes anything off the shelf to fit. My mate ran an efr7064 twin scroll on his car. Made 500bhp and fullboost by 3500.
Custom T3 twin scroll up and downpipe fabrication was needed to make it fit I've had numerous conversations with tuners all over the world on the short comings of the internal wastegated versions of the twin scroll BW units and we all came to the same point of view. It just doesn't work nicely. You can faff about with spring rate, preload, solenoid types and number of ports on the solenoid and the wastegate capsule. You never get quite where you want to go and decide balls to this and switch to 2 external gates. Now don't get me wrong here, I'm a massive fan of the BW turbos and I run a 9180EFR on my own drag car with great success. The long and short of it though is, in my experience they are best used with an external gate or not at all. Martyn |
Originally Posted by MartynJ
(Post 11993934)
Having spent days and days and days faffing about with one recently we'll agree to disagree on that one.
I've had numerous conversations with tuners all over the world on the short comings of the internal wastegated versions of the twin scroll BW units and we all came to the same point of view. It just doesn't work nicely. You can faff about with spring rate, preload, solenoid types and number of ports on the solenoid and the wastegate capsule. You never get quite where you want to go and decide balls to this and switch to 2 external gates. Now don't get me wrong here, I'm a massive fan of the BW turbos and I run a 9180EFR on my own drag car with great success. The long and short of it though is, in my experience they are best used with an external gate or not at all. Martyn My mates was twin external wastegates. I didn’t realise ther were internal gated Borgy |
the BW kit is a very nice package but twin EWG is a packaging pain in the arse in the tight confines of a scoob engine bay-luckily theres a good few turbo options at this level that will take standardish up and down pipes.
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Originally Posted by madwrx
(Post 11994065)
the BW kit is a very nice package but twin EWG is a packaging pain in the arse in the tight confines of a scoob engine bay-luckily theres a good few turbo options at this level that will take standardish up and down pipes.
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sounds like a fair bit of faff for a 550+ turbo really -completely custom headers ,up and down pipes-plus twin gates- bet it sounded awesome though;)-
cheaper with a gtx 3076R with internal wgate imo |
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