Initial BorgWarner EFR 9180 T4 IWG impressions - Page 3 - RX7Club.com



Initial BorgWarner EFR 9180 T4 IWG impressions

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Old 02-21-17, 04:21 PM
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9180, how is your car coming??
Getting there brother.

Bout to drop motor and tranny in next weekend. Waiting on clutch. From there its just all supporting mods to get the car ready to run. I'll be calling you for adaptronic stuff, prolly advice on how to run the pro dash lol. It would be a dream come true to call you to tune it this fall


These results are definaitley making me wish it was ready to go 30psi or higher. Plenty of ethanol suppliers here and race gas. I'm sure I'll have like 4 diff tunes by the time its all said and done lol
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Old 03-03-17, 02:17 AM
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Damn my buddy offered me his 9180 for $1500

Want to hop on it for my 13bRE semi p port
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Old 03-26-17, 07:10 AM
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...i'm wondering if there a any limitations to this turbo.

I planned to buy it because i like the fact it has so much stuff included, plus its a state of the art turbo (i hate buying stuff for the car that is already outdated).

Unfortunately, i heard about some limitations of the wastegate, and the bov, so you might to have to upgrade these sooner or later.

As i'm now going all in with my engine (bridgeport, 1/2" stud kit, perhaps 2piece eccentric shaft and intermediate bearing, dry sump) i'm wondering if the turbo, at least the IWG version, might be too small. The 20B guys have this problem, so it can be a factor for a 13B race engine as well, right?
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Old 03-26-17, 08:25 PM
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No.
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Old 03-29-17, 12:27 PM
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...i'm wondering if there a any limitations to this turbo.

I planned to buy it because i like the fact it has so much stuff included, plus its a state of the art turbo (i hate buying stuff for the car that is already outdated).

Unfortunately, i heard about some limitations of the wastegate, and the bov, so you might to have to upgrade these sooner or later.

As i'm now going all in with my engine (bridgeport, 1/2" stud kit, perhaps 2piece eccentric shaft and intermediate bearing, dry sump) i'm wondering if the turbo, at least the IWG version, might be too small. The 20B guys have this problem, so it can be a factor for a 13B race engine as well, right?
I would buy the 1.05A/R externally gated version. The main benefit of IWG is reduced noise. If you already have a full bridge engine, I'm guessing noise and manners aren't a priority for you. I struggled with boost creep with the 9180 IWG and it was pretty annoying. I would be hesitant if this is a dedicated track car. You wouldn't want to have boost creep if you're flogging the car on a cold track day and potentially damage the engine.
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Old 03-31-17, 04:20 AM
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Thanks! it will become a fun first car after it is completed, so yes, noise is not the biggest problem - i would like to keep it streetable, to drive it to the track (but it will be more used for quartermile than circuit), but i have to deal with problems like a big 3.5 or 4" downpipe - flow/performance vs. noise/space.

Boost creep would def. be an issue i wouldnd't like to deal with, i also heard the integrated BOV is not properly sized for very high hp numbers.

So i'm leaning toward the S300SXE, he should also have some adavantages compared to the EFR after what i read from Howard Coleman, the bif advantage of the EFR might be his bearing and the early spool, but i'm not sure if thats worth nearly $1000+ more for me... :/
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Old 03-31-17, 12:25 PM
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I would say that the EFR is definitely worth the price for the performance you get. It spools and responds faster similarly-sized turbo than any turbo I've seen or owned. I switched from a GT40R ball bearing to the larger EFR 9180IWG and there is absolutely no comparison. If you can afford it, I would go that route over the SXE.

Also, I ran as high as 31psi and never heard compressor surge on throttle lift that would make me think the BOV wasn't doing it's job. I recommend keeping it as it doesn't sound bad and cleans up the plumbing/saves weight.

I didn't have trouble making a 4" downpipe fit with the IWG, but I'm sure it contributed to my boost creep issues. With EWG, it wouldn't be an issue.
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Old 04-17-17, 04:17 PM
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@shainiac: What did you do to to avoid tht boost creep? As your sig says, you still driving the IWG version. Have you ported the wastegate or simply tried to re-tune the car better?

Would you say its necessary or better to go all 4" with the downpipe instead of 3.5"? I think more than 4" isn't possible in terms of space, and i have to keep the noise at an acceptable level, too.
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Old 04-17-17, 05:29 PM
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@shainiac: What did you do to to avoid tht boost creep? As your sig says, you still driving the IWG version. Have you ported the wastegate or simply tried to re-tune the car better?
He put a restrictor in the exhaust.

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Would you say its necessary or better to go all 4" with the downpipe instead of 3.5"? I think more than 4" isn't possible in terms of space, and i have to keep the noise at an acceptable level, too.
Better: Maybe, if you can control creep or run EWG where it's not an issue.
Necessary: No.
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Old 04-18-17, 10:08 AM
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A restrictor? Curious. So you just manipulate the pressure drop, but that would only change the impact, not the cause, plus it will result in a loss of power and/or efficiency...
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Old 04-18-17, 03:41 PM
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I want to make a few points;

A) generally it does not make much sense to run a 9180 at low boost pressures( under 18 psi it does not make any more power than a 8374 in my experience)
B) One can port the WG and reduce creep on the 8374+ size models that sometimes experience creep( I was able to get a car from 17 psi on cold days down to 11psi- 4th gear on the track).
C) 7670 units never ever creep
D) 90% of people with 8374 units can hold 12 psi, its only the larger 3.5/4" exhaust that really cause an issue.

Last edited by Turblown; 04-18-17 at 10:15 PM.
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Old 04-18-17, 07:21 PM
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A restrictor? Curious. So you just manipulate the pressure drop, but that would only change the impact, not the cause, plus it will result in a loss of power and/or efficiency...
It's a sub-optimal solution.

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I want to make a few points;

A) generally it does not make much sensor to run a 9180 at lower boost pressures( under 18 psi it does not make any more power than a 8374 in my experience)
B) One can port the WG and reduce creep on the 8374+ size models that can sometimes experience creep( I was able to get a car from 17 psi on cold days down to 11psi- 4th gear on the track).
C) 7670 units never ever creep
D) 90% of people with 8374 units can hold 12 psi, its only the larger 3.5/4" exhaust that really cause an issue.
Just curious, what power range would you project from 1bar with a 7670IWG on pump?
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Old 04-19-17, 12:02 AM
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Narfle

Just curious, what power range would you project from 1bar with a 7670IWG on pump?




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Dyno sheet attached is from our full cast 7670 kit on pump gas. Street ported engine by Lucky7Racing.

13.6 psi; 377rwhp/298rwhp torque
Attached Thumbnails
EFR 7670 IWG Dyno Results-cast-efr-7670-fd3s-rx7-pump-gas-dyno.jpg

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Old 04-20-17, 12:56 PM
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@shainiac: What did you do to to avoid tht boost creep? As your sig says, you still driving the IWG version. Have you ported the wastegate or simply tried to re-tune the car better?

Would you say its necessary or better to go all 4" with the downpipe instead of 3.5"? I think more than 4" isn't possible in terms of space, and i have to keep the noise at an acceptable level, too.
I put a 2.5" steel restrictor in the exhaust. It helped some, but it was still higher than I'd prefer in higher gears for pump gas. I never changed the downpipe, but maybe a 3" one would have made a bigger difference. The problem I had with the spacer was that I kept blowing exhaust gaskets. I didn't want to port the turbo because it is a royal pain in the *** to remove. I ended up making a custom wrench just to get the turbo-manifold bolts tight. And to do that I still had to remove the IWG actuator which is also a pain. I also didn't want to port it because I paid good money to have the thing ceramic coated and didn't want to mess that up either.

For those of us that don't have access to E85, it kind of sucks to not be able to go wide open throttle on pump gas without risking engine damage. I had a water injection system that I trusted so I wasn't too bent out of shape about it. But if I'd bought the turbo with expectations of driving on the street at 15psi on pump gas and turning it up on race gas at the track, I would have been upset. That said, i loved the turbo and it was leaps and bounds more responsive than any rotary making similar power I've been in.
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Old 04-20-17, 06:26 PM
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What was the lowest boost you could run without the restrictor Shainiac?
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Old 04-21-17, 07:30 AM
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What was the lowest boost you could run without the restrictor Shainiac?
It would make 17psi in 2nd gear and about 20 in 3rd gear with the 7psi or 14psi spring in the Turbosmart actuator.
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Old 04-21-17, 09:41 AM
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Almost 95 percent of ewg setups will boost creep on a big exhaust system with a high enough flowing turbo fyi.
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