Justin Posted July 4, 2005 Share Posted July 4, 2005 I'm running power robbing rich at the moment. I've just seen that my AFR gauge only uses a narrowband O2 sensor which is no good for accurate monitoring really and is always indicating Rich at very low revs and WOT. I'm running around and just over 500 bhp. I have an Blitz Access ECU and Apexi SAFC with 550 UK injectors & resistor pack. Also the car is difficult to start. I'm hoping it is fuelling issues and not combustion chamber issues. Question 1. If I buy a Wideband O2 sensor can I just plug it in where the narrowband senor was and expect the ECU to learn the new ranges or does the ECU need remapping? Question 2. Would it be better to replace the SAFC with a Greddy Emanage? If so why? Question 3. Anyone know where I can get a pinout diagram for a Blitz Access ECU? I can't find any support for it at all on the web. Question 4. When mapping an ECU do you need to decide that you will always run at a maximum boost pressure of sat 1.3 or can I map it then safely flick between say 1.3 and 1.5? Cheers for your time. Justin Link to comment Share on other sites More sharing options...
Supra_Nish Posted July 4, 2005 Share Posted July 4, 2005 You mean the bonnet didn't fix all your problems? Sorry, hi-jack over Link to comment Share on other sites More sharing options...
Alex Posted July 4, 2005 Share Posted July 4, 2005 Question 1. If I buy a Wideband O2 sensor can I just plug it in where the narrowband senor was and expect the ECU to learn the new ranges or does the ECU need remapping? No. It needs it's own boss welding into the exhaust - at least 30cm from the exit of the turbos. A boss will be supplied by any decent WB02 kit. Question 2. Would it be better to replace the SAFC with a Greddy Emanage? If so why? Yes - better map resolution (emanage has a user definable 16x16map the S-AFC has a lot less points for correction). However the eManage is less of a nessecity as you are still on a sequential system. Question 3. Anyone know where I can get a pinout diagram for a Blitz Access ECU? I can't find any support for it at all on the web. I would assume the pin outs will be the same as stock. Because it uses the same loom yes? Also, why don't you get Racelogic (Blitz distributors) to re-map it? Or take it to be re-mapped - then you don't need the S-AFC or an eManage? If you can't get it remapped I'd be tempted to sell it, get a stocker + SLD. Question 4. When mapping an ECU do you need to decide that you will always run at a maximum boost pressure of sat 1.3 or can I map it then safely flick between say 1.3 and 1.5? With a SAFC you need to stick to 1 map and 1 boost level ideally. With an eManage you can tell it to add extra fuel at different boost levels over the standard level so you map the base line for the lowest amount of boost you intend to run and then additionally inject extra fuel for extra boost. Link to comment Share on other sites More sharing options...
Justin Posted July 4, 2005 Author Share Posted July 4, 2005 You mean the bonnet didn't fix all your problems? Sorry, hi-jack over Link to comment Share on other sites More sharing options...
Justin Posted July 4, 2005 Author Share Posted July 4, 2005 Thanks a lot Alex. I have two probes in my exhaust. One will be the stock narrowband and the other will be the narrowband for the 'Ultralite' AFR gauge I presume? Shall I rip out the AFR sensor and put the Wideband in the same hole? What is an SLD? Link to comment Share on other sites More sharing options...
Alex Posted July 4, 2005 Share Posted July 4, 2005 Take out the gei narrowband sensor and gauge...replace with a nice AEM WB02 gauge and sensor. Narrowbands arn't worth having. I expect that the Blitz Access ECU not only has a map but also, De limits the speed, removes fuel cut, raises the rev limit. If you can't get the Blitz remapped then trying to fudge it with a S-AFC or eManage MAY be difficult as aftermarket ECU's tend to have odd maps - think Matt had issues with his MINES ecu. If you can keep the blitz and map round it fine...get yourself an eManage and get over to Ian C's. If you can't keep the blitz cause it's going bonkers...then you'll need a replacement stock ECU and a seperate SLD (Speed Limit Defencer). If I was you I'd get an EManage and a WB02 and get over to Ians' asap Link to comment Share on other sites More sharing options...
Dave S Posted July 4, 2005 Share Posted July 4, 2005 my Blitz Access works fine with the emanage...theres very few choices when you want raised rev limit ....agree with Alex ...WBO2 asap DaveS Link to comment Share on other sites More sharing options...
Justin Posted July 4, 2005 Author Share Posted July 4, 2005 Do you wire the other end of the O2 sensor into the ECU inputs directly? Link to comment Share on other sites More sharing options...
Dave S Posted July 4, 2005 Share Posted July 4, 2005 WBO2 come with their own controller/readout ...and hopefully a linear 5v output for datalogging....mine goes into the E01 emanage/boost controller Dave Link to comment Share on other sites More sharing options...
Ian C Posted July 4, 2005 Share Posted July 4, 2005 Thanks for all the pimping Alex The stock ECU wouldn't have a clue what to do with the output of a wideband sensor as it's 0-5v with 5v being most lean, whereas a narrowband is 0-1v with 1v being most rich Having said that, some widebands have a 0-1v output as well to replace your stock narrowband, and that wire you can run to the ECU. Having said *that*, though, no-one has tried this for at least three reasons: 1. You already have a perfectly good stock narrowband sensor already plumbed in 2. No-one knows if the outputs from the wideband 1v line would correlate exactly with the stock narrowband outputs and therefore would be compatible 3. The stock O2 sensor is a bolt-on flange, every other O2 sensor on the planet is a screw in plug design, so you couldn't simply swap the sensors - therefore removing the only remaining reason to ditch the stock sensor I had hybrid sequentials on 550's run for two years perfectly OK with an SAFC mapped by Chris Wilson. So they can do the job. Until it went wrong in such an obscure way it caused me 5 months of hell trying to diagnose wtf was wrong. I almost put a bullet through it, I shit ye not, instead I sold it on Ebay Given the cost of an E-Manage over an sAFC I'd go E-Manage every time though. It's 1000% better for 50% more cash. If you want a raised rev limit, you'd have to stick to the Blitz ECU, as yet I know of nothing that can increase the rev limit other than a non-stock ECU. It's not a case of "working" with the E-Manage, they will work, just that some aftermarket drop-in ECUs can have some pretty fruity fuel maps, if this rendered my base map useless it'd be a multi-day job to map = £££'s (I'm trying to answer all the questions I can, apologies for jumping about like this) The E-Manage can map for different boost pressures. I currently can choost three settings on my boost controller - wastegate only (0.9bar), normal driving (1.2bar) and madness (1.4bar). All of these are fully catered for in fuelling and ignition timing with the one map I'm running. -Ian Link to comment Share on other sites More sharing options...
Alex Posted July 4, 2005 Share Posted July 4, 2005 Thanks for all the pimping Alex Send the commission cheques to the usual address Link to comment Share on other sites More sharing options...
Justin Posted July 5, 2005 Author Share Posted July 5, 2005 Thanks Alex and Ian. Very much appreciated educational input. I am going to get a compression and leak down test. Then, fingers crossed it comes up fine, I'll get the O2 sensor tested. Then maybe look at getting an Emanage and selling the SAFC. Ian you say there is potential for by base map to get buggered by swapping the SAFC for an Emanage is that correct? Link to comment Share on other sites More sharing options...
Alex Posted July 5, 2005 Share Posted July 5, 2005 He meant the work he's done on the eManage before now wouldn't really help in this situation so he'd have to build you a map from the ground up which would take a lot of time. The base map reference was for the eManage NOT your ECU. HTH Link to comment Share on other sites More sharing options...
Justin Posted July 5, 2005 Author Share Posted July 5, 2005 Ah gotcha, Does it really take that long to get the right map for the Emanage? Link to comment Share on other sites More sharing options...
Ian C Posted July 5, 2005 Share Posted July 5, 2005 You can have a good one or a quick one -Ian Link to comment Share on other sites More sharing options...
Tannhauser Posted July 5, 2005 Share Posted July 5, 2005 Also, why don't you get Racelogic (Blitz distributors) to re-map it? Or take it to be re-mapped - then you don't need the S-AFC or an eManage? If you can't get it remapped I'd be tempted to sell it, get a stocker + SLD.. If I remember correctly, Racelogic can't or won't re-map the Blitz Access ECU. I used to have one and wanted it mapped for our feebler UK fuel. So, unless they have changed in the last couple of years, I think the answer will be 'no'. Cliff Link to comment Share on other sites More sharing options...
Justin Posted July 5, 2005 Author Share Posted July 5, 2005 I got an email back from Racelogic today saying they couldn't and didn't know anyone in the UK who could map an Access anymore. Link to comment Share on other sites More sharing options...
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