MARC MOSS Posted June 17, 2014 Share Posted June 17, 2014 Right... Tell me I'm right please.. To reach fuel cut you actually need to exceed the standard manifold pressure that the engine is supposed to make yea?For example:::: if I fit a new exhaust to my fc rx7 I wouldn't hit fuel cut until I booted the bastard and made slightly more boost than the ecu intended .. Not when I started driving with rising boostWanker car Quote Link to post Share on other sites
shorty Posted June 17, 2014 Share Posted June 17, 2014 Yea bosst cut will only hapen when you build enough pressure to exceed the pre set limit. E.g 1bar boost cut so can drive a starlet about on a gt35 with manifold to suit all day but as soon as it makes 1bar stock ecu would boost cut.E.g only before everyone jumps on how bad an idea that would be lol. Quote Link to post Share on other sites
MARC MOSS Posted June 17, 2014 Author Share Posted June 17, 2014 So if I rev the bastard and it's spluttering like a bastard and then slightly block the exhaust which makes it rev fine might make it a mass air flow sensor issue? Quote Link to post Share on other sites
Jim* Posted June 17, 2014 Share Posted June 17, 2014 I don't think starlets have MAF sensors? Quote Link to post Share on other sites
MARC MOSS Posted June 17, 2014 Author Share Posted June 17, 2014 Na they don't lol Quote Link to post Share on other sites
MARC MOSS Posted June 17, 2014 Author Share Posted June 17, 2014 Just converted an rx7fc na to a turbo ii ...Fitted an hks exhaust system from the turbo back and the bastard will tickover and build up revs fine but as soon as you try and drive it it splutters and coughs like a bitch Quote Link to post Share on other sites
Jim* Posted June 17, 2014 Share Posted June 17, 2014 Plug gaps? At a random guess? Afr? Quote Link to post Share on other sites
shorty Posted June 18, 2014 Share Posted June 18, 2014 Maf may well be shitting itself, what have you done for management? Or you just lobbed a tubby on an na and expected the ecu to cope lol? Quote Link to post Share on other sites
richardc9052 Posted June 18, 2014 Share Posted June 18, 2014 either that or its boost spike/creep due to the exhaust being more free flowing which is making it hit boost cut Quote Link to post Share on other sites
shorty Posted June 18, 2014 Share Posted June 18, 2014 (edited) Thing is if you have a stock na ecu in there fuel cut will be waaaay less than the demand of fuel for a turbo lol. And yea as above with a decent exhaust you will hit fuel cut even quicker! Simple math, more air needs more fuel. If using na ecu you will want an fcd, rrfpr, and an uprated or turbo rx7 fuel pump minimum! Edited June 18, 2014 by shorty Quote Link to post Share on other sites
MARC MOSS Posted June 18, 2014 Author Share Posted June 18, 2014 Nope we had an na and a turbo II. Stripped the complete turbo engine, full drivetrain loom the whole lot and fitted it into the na in three days I'm thinking maf as well to be honest Quote Link to post Share on other sites
MARC MOSS Posted June 18, 2014 Author Share Posted June 18, 2014 The fc vert was the turbo donor and was fucking rotten. The other was a na mint shell with dead rotor tips... It made sense to do a complete swap! Wait till you see this fucker at jae. I sourced some amazing and rare volks for the owner as well.. It's going to be sick and it's so close to completion Quote Link to post Share on other sites
shorty Posted June 18, 2014 Share Posted June 18, 2014 Epic!! Marc you know of any 18" jdm rims going atm im open to any and all kinds but i know what i like. Need some for the aristo Quote Link to post Share on other sites
MARC MOSS Posted June 18, 2014 Author Share Posted June 18, 2014 Pcd? Quote Link to post Share on other sites
shorty Posted June 18, 2014 Share Posted June 18, 2014 114.3x5 Quote Link to post Share on other sites
AdamB Posted June 20, 2014 Share Posted June 20, 2014 MAF or TPS it sounds like mate, do you have a boost gauge on it at all as that will give you an idea of whats happening, Quote Link to post Share on other sites
MARC MOSS Posted June 20, 2014 Author Share Posted June 20, 2014 Fucked wiring to the inlet mani was the cause of the original issue and then the hks exhaust have us fuel cut anyway lolIt only has to exceed the standard boost limit by 1psi and it shuts the rear rotor down.. Quote Link to post Share on other sites
daniel_g Posted June 20, 2014 Share Posted June 20, 2014 Any pics of the FC ? Quote Link to post Share on other sites
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