demon1300 Member 435 Member For: 13y 3m 24d Gender: Male Posted 20/04/17 12:09 PM Share Posted 20/04/17 12:09 PM Just doing more turbo homework and I really can't choose between the gtx4202 and efr9180. I really had my heart set on the efr but am not sure it'll make the kind of power I want on the boost levels I'm thinking ( less than 25 psi) on pump 98. I want to try and hold the engine together without having to build one just yet.Judging by the comp maps, the efr needs a pressure ratio of around 4 to make around 800 engine hp. The 4202 on the other hand makes it right in the middle of the central efficiency island, right at around my target boost pressure (2.9 pressure ratio). I'm just worried that the 4202 on a manual with stock engine would be an absolute pig on the street. I don't want a powerband like a light switch for 2k rpm.Can anyone with experience with these comment? Link to comment https://www.fordxr6turbo.com/forum/topic/92972-general-turbo-chat/page/3/#findComment-1636988 Share on other sites More sharing options...
HI PSI Member 1,589 Member For: 19y 8d Gender: Male Location: Central Queensland Posted 20/04/17 01:07 PM Share Posted 20/04/17 01:07 PM We were seeing positive pressure form 2200 rpm, with my 4202. With only a street tune.... Dyno still to come... Link to comment https://www.fordxr6turbo.com/forum/topic/92972-general-turbo-chat/page/3/#findComment-1637000 Share on other sites More sharing options...
Puffwagon Gold Donating Members 16,348 Member For: 10y 4m 3d Gender: Not Telling Posted 20/04/17 01:17 PM Share Posted 20/04/17 01:17 PM The air pressure at my house is 14.65 psi. You'll be running 28 psi on the gtx42r and 44 psi on the bw based off the comp maps and your desired pressure ratios and power requirements. I'm sure you already did the math though. Neither is good for a stock motor but you can keep it turned down until it's built. On paper the bw looks like a much better street turbo. One way to look at it is that you'll be frying your tyres on the street with either turbo so maybe the smaller one is better? Link to comment https://www.fordxr6turbo.com/forum/topic/92972-general-turbo-chat/page/3/#findComment-1637001 Share on other sites More sharing options...
MattyP MattyP Cruise Control 6,317 Member For: 13y 29d Gender: Male Location: Central Coast Posted 20/04/17 01:58 PM Author Share Posted 20/04/17 01:58 PM I always think get the smallest turbo to suit your application without going outside of its efficiency, So with that in mind I'd say the borgie, add some water injection and away you go! Link to comment https://www.fordxr6turbo.com/forum/topic/92972-general-turbo-chat/page/3/#findComment-1637004 Share on other sites More sharing options...
HI PSI Member 1,589 Member For: 19y 8d Gender: Male Location: Central Queensland Posted 20/04/17 02:08 PM Share Posted 20/04/17 02:08 PM (edited) 51 minutes ago, Puffwagon said: The air pressure at my house is 14.65 psi. Edited 20/04/17 02:09 PM by HI PSI Link to comment https://www.fordxr6turbo.com/forum/topic/92972-general-turbo-chat/page/3/#findComment-1637006 Share on other sites More sharing options...
Puffwagon Gold Donating Members 16,348 Member For: 10y 4m 3d Gender: Not Telling Posted 20/04/17 02:11 PM Share Posted 20/04/17 02:11 PM 15 minutes ago, MattyP said: I always think get the smallest turbo to suit your application without going outside of its efficiency, I'm not sure I'd like to deal with every hose, gasket and fitting popping off and generally sh*tting itself under the amount of boost the bw would have to make to match the garrett. I suppose it's not insurmountable. Lol would it make you feel better if I said the absolute air pressure at my house is 14.65psi @HI PSI Link to comment https://www.fordxr6turbo.com/forum/topic/92972-general-turbo-chat/page/3/#findComment-1637007 Share on other sites More sharing options...
arronm Dropping a turd Gold Donating Members 9,520 Member For: 17y 7m 6d Gender: Male Location: Perth Posted 20/04/17 02:26 PM Share Posted 20/04/17 02:26 PM (edited) The air pressure at my house is 14.65 psi Maybe he has a "bar" Edited 20/04/17 02:30 PM by arronm 1 Link to comment https://www.fordxr6turbo.com/forum/topic/92972-general-turbo-chat/page/3/#findComment-1637009 Share on other sites More sharing options...
HI PSI Member 1,589 Member For: 19y 8d Gender: Male Location: Central Queensland Posted 20/04/17 02:29 PM Share Posted 20/04/17 02:29 PM (edited) 19 minutes ago, Puffwagon said: Lol would it make you feel better if I said the absolute air pressure at my house is 14.65psi @HI PSI I was going to respond with sarcasm. But, I decided not to. Best to remain on topic. :D Edited 20/04/17 02:30 PM by HI PSI 1 Link to comment https://www.fordxr6turbo.com/forum/topic/92972-general-turbo-chat/page/3/#findComment-1637010 Share on other sites More sharing options...
Puffwagon Gold Donating Members 16,348 Member For: 10y 4m 3d Gender: Not Telling Posted 20/04/17 02:40 PM Share Posted 20/04/17 02:40 PM Probably best ay. Puts away meme folder :( 7 hours ago, arronm said: Maybe he has a "bar" Link to comment https://www.fordxr6turbo.com/forum/topic/92972-general-turbo-chat/page/3/#findComment-1637011 Share on other sites More sharing options...
demon1300 Member 435 Member For: 13y 3m 24d Gender: Male Posted 20/04/17 10:49 PM Share Posted 20/04/17 10:49 PM (edited) God damn tapatalk! Edited 20/04/17 10:52 PM by demon1300 Link to comment https://www.fordxr6turbo.com/forum/topic/92972-general-turbo-chat/page/3/#findComment-1637017 Share on other sites More sharing options...
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