ashley newbert Posted August 14, 2014 Share Posted August 14, 2014 What would happen if I just fitted a turbo to my standard ep91 block with out a piggy back ecu?? Like I say just curious only a question Quote Link to post Share on other sites
funny onion Posted August 14, 2014 Share Posted August 14, 2014 if you just fitted a turbo then it would blow up very quickly. with all supporting mods and low boost it should be ok. Don't be tempted to run anything about 0.5 bar id say on an na engine. personally would swap a 4efte in if you want to go turbo as thats what youll end up doing in the end anyways i reckon ... Quote Link to post Share on other sites
jimmymac101 Posted August 14, 2014 Share Posted August 14, 2014 to do it properly its not a cheap affair, however there have been some impressive results from race-tech and tuning developments who have both done this. the one big bonus of doing a 4efe-t is that when the engine blows a replacement engine is cheap and you just swap the turbo stuff over and off you go just my thoughts james Quote Link to post Share on other sites
ashley newbert Posted August 14, 2014 Author Share Posted August 14, 2014 Thanks guys! Quote Link to post Share on other sites
mikey4410 Posted August 14, 2014 Share Posted August 14, 2014 The car just misfires as soon as boost comes in even a gnats cock.seen what happens on a video I saw and the cars totally undrivable.dont ever do that on a starlet for godsake Quote Link to post Share on other sites
maddox710 Posted August 14, 2014 Share Posted August 14, 2014 Will make your piston tops look like scones Quote Link to post Share on other sites
TrisK Posted August 14, 2014 Share Posted August 14, 2014 The car just misfires as soon as boost comes in even a gnats cock.seen what happens on a video I saw and the cars totally undrivable.dont ever do that on a starlet for godsakeYep. Map sensor goes mad when it sees boost Quote Link to post Share on other sites
morgey Posted August 14, 2014 Share Posted August 14, 2014 You can get a map convertor to run boost on the n/a map sensor.Cheif quimby has experience of boosting n/a's Quote Link to post Share on other sites
hughes21 Posted August 14, 2014 Share Posted August 14, 2014 The car just misfires as soon as boost comes in even a gnats cock.seen what happens on a video I saw and the cars totally undrivable.dont ever do that on a starlet for godsakeHaha no it doesn't Quote Link to post Share on other sites
aaddzz123 Posted August 14, 2014 Share Posted August 14, 2014 KidV (mark) tried doing this a few times and blew the engines both times... Then again you want to talk to Rob H about it if you're serious and want to do it properly as he did... Quote Link to post Share on other sites
daniel_g Posted August 14, 2014 Share Posted August 14, 2014 Ive done it.Its a bit more work than just bolting a turbo on. There are also a few ways to do the conversion, way i done it i used GT looms, ECU, MAP sensor etc.Theres lots of threads in the Tech section of you have a dig Quote Link to post Share on other sites
TurboTobz Posted August 14, 2014 Share Posted August 14, 2014 You'd need to have some supporting mods on the fuelling side at the very least. If not your afrs will be dangerous as fook. Quote Link to post Share on other sites
richardc9052 Posted August 15, 2014 Share Posted August 15, 2014 (edited) The map sensor can't read boost. It just reads it at 0. It will just run extremely lean and bye bye engine. There's no missfiring or any crap that people mentioned above. With a set of 4efte injectors, a 1:2 rrfpr and the lambda unplugged it will run great but get like 5mpg lol Edited August 15, 2014 by richardc9052 Quote Link to post Share on other sites
TrisK Posted August 15, 2014 Share Posted August 15, 2014 The map sensor can't read boost. It just reads it at 0. It will just run extremely lean and bye bye engine. There's no missfiring or any crap that people mentioned above. With a set of 4efte injectors, a 1:2 rrfpr and the lambda unplugged it will run great but get like 5mpg lol If goes into a fuel cut safe mode when it comes on boost. It's in a video. And KidV had it when he made his 4efe-t Quote Link to post Share on other sites
mikey4410 Posted August 15, 2014 Share Posted August 15, 2014 Trisk as above is what I have seen.thats the truth. Quote Link to post Share on other sites
hughes21 Posted August 15, 2014 Share Posted August 15, 2014 My mate has just turbo'd his 4efe used glanza sump stuck a ct9 kit on a 4efte map sensor a fcd and a fuel pressure regulator and it boosts at 0.5 fine who cares of it blows up it's a sportif haha Quote Link to post Share on other sites
FMuscle Posted August 15, 2014 Share Posted August 15, 2014 I've seen someone running NA ECU on turbo engine, All that he did was a 4E FTE MAP sensor and injectors double the size. <They compensate the MAP, and the MAP reads the boost correctly... Quote Link to post Share on other sites
daniel_g Posted August 15, 2014 Share Posted August 15, 2014 As ive said theres loads of ways to do it. However using a N/a MAP sensor (without a converter thing) and with no management is not a wise way to go about it lol. Quote Link to post Share on other sites
richardc9052 Posted August 15, 2014 Share Posted August 15, 2014 Look lads I know what I know. I have seen, driven and even taken down a drag strip a starlet running 4efe with a ct9 strapped on. Missing only the lambda but with added 4efte injectors and an fpr. Believe me. I was there when the car was being turbo'd and know how it works. This was on not 1 but 2 engines in the same starlet. The BIMoto. The map sensor can only read 1 bar below 0. Giving some allowance to atmospheric pressure based on being above or below sea level. The ecu doesn't know what boost is so can't react when it sees it. The map sensor can't even detect it to warn the ecu. It just reads that it's under full load and follows the fuel and ignition map as if it's still n/a Quote Link to post Share on other sites
richardc9052 Posted August 15, 2014 Share Posted August 15, 2014 I've seen someone running NA ECU on turbo engine, All that he did was a 4E FTE MAP sensor and injectors double the size. <They compensate the MAP, and the MAP reads the boost correctly...Even if a 4efte map sensor was compatible (is it?) the voltage range would be divided up further and so would only send the voltage that the n/a ecu knew as WOT at 1 bar of boost. On an n/a you won't be going over 0.5-0.6 (which has the same ECR as an fte at 1 bar) So you will only ever get 3/4 of the way through the n/a map. Meaning adding way more fuel with fpr and or bigger injectors. Again. It all works but it's not something you want to do on anything for the road Quote Link to post Share on other sites
FMuscle Posted August 15, 2014 Share Posted August 15, 2014 Here's the link. Quote Link to post Share on other sites
richardc9052 Posted August 15, 2014 Share Posted August 15, 2014 Here's the link.Thats a 4age. Not 4efe. I don't know much about them but that's exactly what I said above. It doesn't make the ecu read boost it just divides up the voltage range. I the ecu will think you are only at 3/4 load at all times when boosting. Might as well keep the standard map and dump loads of fuel in. Same thing as he will also need an adjustable for to add loads of fuel for boost. Quote Link to post Share on other sites
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