binny

Found the issue was fuel pump hose had deteriorated enough to start and just idle, but not have enough pressure to run properly - All sorted now!

Hi Adam Yes I have increased the master fuel value as per the increase in capacity And yes it does seem to be fairly lean (Innovate Wideband) I think I will add some more fuel to the master table now that I can get it to run - and see if the AFR's richen up into target values

1 x issue resolved: Fuel tank vent was capped - probably one reason wouldn't start! Yes I have key on priming, it is starting now and I can get it to run by modulating the throttle still doesn't want to idle. - I will fill with some fresh fuel and have another go at it again soon I have attached a bit of a log and the tune WRXSTI2.5 START2.0.pcl Log 13-07-20 2;07;11 pm.llg

Hi Forum dudes, I've recently increased my 98 WRX's engine capacity from the stock 2.0 L up to 2.5 L - now I'm attempting to get a start out of it Symptoms: on switching on ignition fuel pump primes - 1st crank attempt will not fire, 2nd crank attempt engine fires but immediately stalls - this continues over and over note: ** no intercooler or intake piping fitted ** MAP tune / no AFM The car was running the ViPec V44 and Subaru's blue injector (650CC IIRC) with a fairly crappy tune (by me) - with a top mount intercooler, STi VF37 twin scroll turbo (bigger compressor wheel fitted - by Ray Hall) and aftermarket exhaust - seen running below I've seen I should be adjusting the master fuel table for the increase in displacement - Do I need to also adjust the Crank enrichment, Hold, Post start enrichment, Decay tables??? or should that be it? (or anything else I've missed???) as I can't seem to get a start and run at the moment! (old fuel???) Any help greatly appreciated I forgot to mention - I have a Innovate Wideband fitted AFR's seem very lean during cranking but possibly due to engine not running (as widen is using crank battery power)

Thanks Dave I will check that as well - however didn't have a serial to USB adapter

Hi Dave, Thanks - I've sorted the issue, signal wire was partially grounded although there is still a small difference (around 0.2 AFR from the gauge display and ECU reading) I'm guessing due to voltage drop from the gauge to the ECU (I will change the cable size to confirm)

total newb here I have installed a Innovate wideband and its giving me some conflicting info The Gauge display (on the Innovate) shows 14.5 AFR's at Idle on the Vipec it's showing around 12.4 AFR's - so a large difference already then on no load higher RPM the Innovate shows leaner AFR's - around 15 - 16 however the Vipec shows richer AFR's (dropping into 10 AFR's) * some background info on the car I have just swapped the stock TD04 turbo to a JDM twin scroll VF37 with a larger compressor wheel, at the same time I also swapped the injectors from 380 cc to 565cc I have also updated to the latest firmware :?: