Shoota_77 Posted October 27, 2020 Share Posted October 27, 2020 4 hours ago, brian_s30z said: Nah, I doubt it. I already see the meme of the disappointed kid looking at paper (car meme is dyno sheet). “Spends $4k to improve response by 1,000rpm+, only gets 400rpm difference.” You're not sprinkling fairy dust on it, they're mechanical modifications that are proven to work. The variable turbo side of it isn't proven as a specific product yet but the concept is to make it a smaller turbo (which is well proven to add response) until you need it to be a bigger turbo once its spooled up. Even if it was "only" 400 rpm lower in the rev range that will make a massive difference to your response. Arse dyno can definitely feel the difference! Link to comment https://www.sau.com.au/forums/topic/466636-borg-warner-efr-series-turbos-v-20/page/129/#findComment-7942312 Share on other sites More sharing options...
Full-Race Geoff Posted October 28, 2020 Share Posted October 28, 2020 i have a set of the borgwarner VTV housings if anyone is wanting to do a similar setup. They did not work well for me in twinscroll configuration, despite my initial expectation. I hope turbosource has got it figured out, but it definitely does work in open volute/singlescroll Link to comment https://www.sau.com.au/forums/topic/466636-borg-warner-efr-series-turbos-v-20/page/129/#findComment-7942343 Share on other sites More sharing options...
taijohnsen Posted October 28, 2020 Share Posted October 28, 2020 Hi Geoff, can you explain in more detail what did and didn't work well? Are these for the 74mm turbine? And how much would you want for one? Link to comment https://www.sau.com.au/forums/topic/466636-borg-warner-efr-series-turbos-v-20/page/129/#findComment-7942349 Share on other sites More sharing options...
RB335 Posted October 29, 2020 Share Posted October 29, 2020 (edited) My EFR9180 and EFR8474 on 2.8 with Vcam Step II / ex HKS 272 8.7 Absolutely visceral to drive Edited October 29, 2020 by RB335 2 Link to comment https://www.sau.com.au/forums/topic/466636-borg-warner-efr-series-turbos-v-20/page/129/#findComment-7942384 Share on other sites More sharing options...
Mick_o Posted October 30, 2020 Share Posted October 30, 2020 17 hours ago, RB335 said: My EFR9180 and EFR8474 on 2.8 with Vcam Step II / ex HKS 272 8.7 Absolutely visceral to drive So which is which? Link to comment https://www.sau.com.au/forums/topic/466636-borg-warner-efr-series-turbos-v-20/page/129/#findComment-7942420 Share on other sites More sharing options...
Mick_o Posted October 30, 2020 Share Posted October 30, 2020 Here's my 7670 with a little more boost added in. We are at 129K now. Pretty much going to leave it where it is now. Highest power I have seen here in Oz is 418kw ALL IN (on an evo too) that power was made on 235s. My car runs 265s and I have actually back to back tested my car from 235s to a 265 on the exact same tyre (Hankook RS4's) and I lost almost 15kw between the 2 sizes lol. 1 Link to comment https://www.sau.com.au/forums/topic/466636-borg-warner-efr-series-turbos-v-20/page/129/#findComment-7942423 Share on other sites More sharing options...
R32 TT Posted October 30, 2020 Share Posted October 30, 2020 1 hour ago, Mick_o said: So which is which? Surely the bigger number is the 9180... (but yes, that could be wrong). I bet the 8474 must be different to drive though. Link to comment https://www.sau.com.au/forums/topic/466636-borg-warner-efr-series-turbos-v-20/page/129/#findComment-7942429 Share on other sites More sharing options...
Mick_o Posted October 30, 2020 Share Posted October 30, 2020 1 hour ago, R32 TT said: Surely the bigger number is the 9180... (but yes, that could be wrong). I bet the 8474 must be different to drive though. 8474 flows more than the 9180 lol 🤷♂️ Link to comment https://www.sau.com.au/forums/topic/466636-borg-warner-efr-series-turbos-v-20/page/129/#findComment-7942432 Share on other sites More sharing options...
Piggaz Posted October 30, 2020 Author Share Posted October 30, 2020 2 hours ago, Mick_o said: 8474 flows more than the 9180 lol 🤷♂️ But it doesn’t exhale as much 🤷♂️👍😂 Link to comment https://www.sau.com.au/forums/topic/466636-borg-warner-efr-series-turbos-v-20/page/129/#findComment-7942439 Share on other sites More sharing options...
RB335 Posted October 30, 2020 Share Posted October 30, 2020 (edited) Red line is 9180, Blue line 8474. From limited street driving I can't tell a real difference at all in most conditions, no turbo is the clear winner but im inclined to feel the 9180 better suits my engine so far. I'll do some more testing with high lift cams and a 9280 Edited October 30, 2020 by RB335 Link to comment https://www.sau.com.au/forums/topic/466636-borg-warner-efr-series-turbos-v-20/page/129/#findComment-7942441 Share on other sites More sharing options...
Mick_o Posted October 31, 2020 Share Posted October 31, 2020 15 hours ago, Piggaz said: But it doesn’t exhale as much 🤷♂️👍😂 This is true lol. Link to comment https://www.sau.com.au/forums/topic/466636-borg-warner-efr-series-turbos-v-20/page/129/#findComment-7942452 Share on other sites More sharing options...
Piggaz Posted October 31, 2020 Author Share Posted October 31, 2020 On 30/10/2020 at 12:40 AM, RB335 said: My EFR9180 and EFR8474 on 2.8 with Vcam Step II / ex HKS 272 8.7 Absolutely visceral to drive At what turbine speeds? Both of those look far from “all in”. Considering an 8374 will piss in 600 whp, why are a 8474 and 9180 which flow far more only touching those numbers? Have you you got a decent exhaust on it yet or does it still have that 2.1 inch thing you said was on it a while ago? If that has not been addressed you are wasting your time. 1 Link to comment https://www.sau.com.au/forums/topic/466636-borg-warner-efr-series-turbos-v-20/page/129/#findComment-7942453 Share on other sites More sharing options...
Piggaz Posted October 31, 2020 Author Share Posted October 31, 2020 So Benny carried out a turbine housing touch test. After a 20 minute drive he touched the compressor housing, that was cool enough and then dropped a finger on the turbine housing. Even the 1.05 T4 was hot. This was the result. 🤣 Link to comment https://www.sau.com.au/forums/topic/466636-borg-warner-efr-series-turbos-v-20/page/129/#findComment-7942459 Share on other sites More sharing options...
BakemonoRicer Posted October 31, 2020 Share Posted October 31, 2020 Lucky I didn’t end up in the ER can confirm it wasn’t as Luke warm as I thought it was gonna be 🤣 3 Link to comment https://www.sau.com.au/forums/topic/466636-borg-warner-efr-series-turbos-v-20/page/129/#findComment-7942461 Share on other sites More sharing options...
Ben C34 Posted October 31, 2020 Share Posted October 31, 2020 Wow you are special 🧠 3 2 Link to comment https://www.sau.com.au/forums/topic/466636-borg-warner-efr-series-turbos-v-20/page/129/#findComment-7942462 Share on other sites More sharing options...
etang789 Posted November 1, 2020 Share Posted November 1, 2020 On 10/29/2020 at 9:40 PM, RB335 said: My EFR9180 and EFR8474 on 2.8 with Vcam Step II / ex HKS 272 8.7 Absolutely visceral to drive Awesome figures! Im glad I got EFR 8474 as well ! Link to comment https://www.sau.com.au/forums/topic/466636-borg-warner-efr-series-turbos-v-20/page/129/#findComment-7942507 Share on other sites More sharing options...
Timmaz300 Posted November 6, 2020 Share Posted November 6, 2020 I should have 9274 1.05ar results in the next few months. My 3 liter build is nearing completion. 7 Link to comment https://www.sau.com.au/forums/topic/466636-borg-warner-efr-series-turbos-v-20/page/129/#findComment-7942745 Share on other sites More sharing options...
taijohnsen Posted December 4, 2020 Share Posted December 4, 2020 Semi off topic, but Geoff. Is there any way if getting some of the EFR 3D models that I have been seeing used (SEMA shows, Papadakis exhaust manifold video etc) I have searched, but found nothing really. I have no commercial interest with it, I'd just love to print one Link to comment https://www.sau.com.au/forums/topic/466636-borg-warner-efr-series-turbos-v-20/page/129/#findComment-7944046 Share on other sites More sharing options...
burn4005 Posted December 4, 2020 Share Posted December 4, 2020 14 minutes ago, taijohnsen said: Semi off topic, but Geoff. Is there any way if getting some of the EFR 3D models that I have been seeing used (SEMA shows, Papadakis exhaust manifold video etc) I have searched, but found nothing really. I have no commercial interest with it, I'd just love to print one you've been watching the latest papadakis manifold vid havent you! Link to comment https://www.sau.com.au/forums/topic/466636-borg-warner-efr-series-turbos-v-20/page/129/#findComment-7944047 Share on other sites More sharing options...
MotHot Posted January 4, 2021 Share Posted January 4, 2021 (edited) @Timmaz300 looking really good so far, keep up the good work! @all: A friend of mine is collecting parts at the moment to go for about 600 (engine) hp and has snacked up a 8374 IWG. What are the options for the wastegate actuator on the IWG EFRs? Electronic actuator (with supra parts) as suggested in this thread in late August will probably be too expensive for him (500+ $/€ ?), because he just spent loads of money on parts. Are there even any complete kits available now or is it still "do it yourself"-style? The OEM actuator on the EFRs are the known weakpoint on the IWG EFRs, at least thats what this thread and similar threads on other forums suggest. So I wouldn't recommend this to him. If he does go this route, he will definetely need the high boost canister, because otherwise he wouldn't even be able to reach around 15 psi?! This leaves us with conventional aftermarket actuators, for example from turbosmart. Twin Port is probably the way to go here, because the price difference is not that big. Right? What about the position sensor? Is this necessary on a road car or similar to the BW turbo speed sensor (not a must, but very nice to have) or not necessary at all? Is there a noable difference in performance between the GenV and the IWG-75 twin port turbosmart actuator? Thanks guys 🙂 And regards from Germany! Edited January 4, 2021 by MotHot Link to comment https://www.sau.com.au/forums/topic/466636-borg-warner-efr-series-turbos-v-20/page/129/#findComment-7945378 Share on other sites More sharing options...
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