When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
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
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
good to see the first reply is a positive one! Who did the pipe work for you?
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
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 ***** 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.
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 ***** 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
All th ones I knew of were external gated.
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 **** 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.
the BW kit is a very nice package but twin EWG is a packaging pain in the **** 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.
The twin wastegates were fitted on the headers before the uppipe on my mates car with twin screamer pipes exiting through the side of bumper
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
05 February 2018, 04:50 PM
Borg warner efr 7670 twin scroll internal wast gate
-