EBC...
- Thread starter 944 man
- Start date
PSH
PCGB Member
Arrr now there's a question...the two main contenders are Apexi-avcr and the GReddy Profec, although there are others such as Blitz. GReddy is an easy EBC to set up, Apexi is anything but if using all of its functions but if only using the same functions that the GReddy has then its a fairly straight install. I have the Apexi and love it but then I'm a complicated sought of guy, I love all singing, all dancing complicated type things. I guess the way I look at things is the more functions the better even if it may involve a bit of head scratching working out how to use them.
Simon if you do a google search for these two main contenders you'll find lots of forums with comparisons between the two. One thing that you can't set on the avcr is road speed as it doesn't recognise the Porsche feedback. Personally I never found this a problem, I usually have the screen set at one of the other options, boost, rpm , both or more, iirc you can have up to 4 things being monitored on screen at once in either digital or analogue mode.
Which ever you decide on do get the DPW and a boost controller of some description it will transform the car. The 944 turbo in standard trim was handicapped by Porsche to begin loosing boost long before getting to max boost. At the time Porsche said this was to make it an easier car to drive and therefore targeting a wider market, those in the know will tell you this was to stop the 944 turbo from out performing the 911 turbo. In this they failed as Porsche admitted that the 944 Turbo was the fastest car in the fleet even with the handicaps.
To sum up, do the DPW mods and release the cars real potential , you'll never look back Simon....
Pete
Simon if you do a google search for these two main contenders you'll find lots of forums with comparisons between the two. One thing that you can't set on the avcr is road speed as it doesn't recognise the Porsche feedback. Personally I never found this a problem, I usually have the screen set at one of the other options, boost, rpm , both or more, iirc you can have up to 4 things being monitored on screen at once in either digital or analogue mode.
Which ever you decide on do get the DPW and a boost controller of some description it will transform the car. The 944 turbo in standard trim was handicapped by Porsche to begin loosing boost long before getting to max boost. At the time Porsche said this was to make it an easier car to drive and therefore targeting a wider market, those in the know will tell you this was to stop the 944 turbo from out performing the 911 turbo. In this they failed as Porsche admitted that the 944 Turbo was the fastest car in the fleet even with the handicaps.
To sum up, do the DPW mods and release the cars real potential , you'll never look back Simon....
Pete
944 man
Active member
MLR Paul?
Are there any article that anyone can direct me towards, which speaks knowledgeably about boost and fueling? Im particularly interested in what amount of air the DME is able to fuel, as Im reluctant to fit an aftermarket 'chip'.
Ed, for £200, surely an EBC has to be a no-brainer, even if I wasnt wary of Dawes Device type MBCs.
Simon
edh
New member
38mm kit from Pauer tuning includes everything you need.
I wouldn't be worried about aftermarket chips - I doubt there are many turbos still running standard chips.
I thought that if you wanted to run more boost (and hold it) then it was a requirement to change the DME chip? How about our new UK MAP based offering? Tom will know the full story I guess, but I was under the impression that the AFM maxes out at 5V well before the maximum air flow, so the fuelling relies on a map that is designed for a set boost level?
..careful with that headgasket []
I wouldn't be worried about aftermarket chips - I doubt there are many turbos still running standard chips.
I thought that if you wanted to run more boost (and hold it) then it was a requirement to change the DME chip? How about our new UK MAP based offering? Tom will know the full story I guess, but I was under the impression that the AFM maxes out at 5V well before the maximum air flow, so the fuelling relies on a map that is designed for a set boost level?
..careful with that headgasket [
]
edh
New member
Definitely will tend to run rich with a boost leak..
As for the headgasket, I would seriously consider it next time the belts are being done, as that is a large proportion of the cost. It's very annoying to get the belts done & then have a h/g fail a few weeks / month later. IIRC belts ~ 300, headgasket ~ 500 (at ph prices)
of course then when the head is off it makes sense to have the Lindsey steam vent kit fitted (see I told you it's a slippery slope.. [] )
As for the headgasket, I would seriously consider it next time the belts are being done, as that is a large proportion of the cost. It's very annoying to get the belts done & then have a h/g fail a few weeks / month later. IIRC belts ~ 300, headgasket ~ 500 (at ph prices)
of course then when the head is off it makes sense to have the Lindsey steam vent kit fitted (see I told you it's a slippery slope.. [
] )As has been said, if you are going to change the boost then you need to change the DME chip.
At WOT, the DME just runs off a one line fueling table to deliver a set amount of fuel for the engine revs. It does not know what boost is, it assumes that it is standard for WOT at those revs.
The signal from the AFM does slightly scale that, but not enough to cope with a boost curve/level that is not the standard that the chips have been programmed for.
944 man
Active member
Im having the belts changed as I need the front seals replacing, and this was why I asked about a headgasket replacement. Simon quoted me £340+ for the seals and belts, which Im happy with, and a further £420 labour to add the headgasket - or at least that was my understanding.
I was all ready to get it in their diary, but Im not sure what to do now. I may be a misunderstanding, of course.
Simon
I was all ready to get it in their diary, but Im not sure what to do now. I may be a misunderstanding, of course.
Simon
944 man
Active member
Thanks Graham. Initially I only wanted to get the car to do as Porsche intended, had the wastegate not been such a weak link, but turbo mission-creep has already started...[
]If I increase the boost then I will change the DME & KLR chips, although Im not keen on being forced to use SUL either. The beauty of the right EBC, I think, is that you can set the boost to match the original boost map, making the car perform far better whilst still using the original fuel and ignition tables.
PSH
PCGB Member
ORIGINAL: 944 man
Thanks Graham. Initially I only wanted to get the car to do as Porsche intended, had the wastegate not been such a weak link, but turbo mission-creep has already started...[
If I increase the boost then I will change the DME & KLR chips, although Im not keen on being forced to use SUL either. The beauty of the right EBC, I think, is that you can set the boost to match the original boost map, making the car perform far better whilst still using the original fuel and ignition tables.
In the old days when doing minor mods and not remapping we used to adjust the ECU pototiometer to get extra fuel for more boost. Not good practise but at least you stop the engine going lean by adding +3 or +6 % of fuel. Will run very rich though and risk bore wash.
Don't worry about ' turbo mission creep' it's quite normal and only harms your wallet...
Pete
944 man
Active member
When I first owned a Turbo in 1993 there wasnt any 'modification' at all! Since then, with Imprezas, Ive managed to only ever swap turbos and ECUs in matched pairs, although I did buy a ScoobyECU in 2003 which worked quite well (Z4 & TD05 +40bhp and EEPROM +30bhp).
Never even fitted a boost gauge, and Im hoping to show similar restraint here...
Never even fitted a boost gauge, and Im hoping to show similar restraint here...
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