For Xmas this year I bought my father, the new owner of my 1984 944 Lux, a Klaus Hoffman Racing chip from www.jmgshop.com. When I owned the car I fitted it with a 1986 DME and AFM which enabled me to chip the ECU. The car is still running on the original early model fuel injectors, I think the flow rate is nearly identical anyhow. This morning we finally round to installing it into the car. For those of you who have not changed the chip in a bosch motronic system before its very simple and took me about 15 mins from removal to turning the key. Do make sure you ground yourself to protect the electronics from any static charge your body may be harbouring.
I always felt that the lux engine in my car just felt a little lacking, there may have been the odd occasion where it went reasonably well but it always felt like it was struggling. Most people seem to think the same thing about it and I have certainly read a few reviews that say the same. It never really felt like a sports car engine and when I changed to the 1986 DME and AFM it also lost a little bit of the low down grunt it had with the early injection system. It left the car feeling a little dull and really prompted my recent purchase of a 951.
As such I really wasn't sure what to expect from the chip, I thought Porsche would have done a decent job maybe with a bit of compromise here and there. However from the first time I turned the key I knew somthing was different, after spening so much time working on the engine you get to know how it sounds and how it vibrates. The engine was now sat idling quieter and smoother than it ever had before, its slight lumpiness and stutters were gone. Sitting inside the car many of the little rattles and vibrations were now gone. So far so good, but lets be honest 944's are for driving and should not be sat about idling.
All I can say is the next 15 mins of driving left me and my Dad in awe, the previously slightly ropey and tired engine had been thorougly transformed. The engine wants to go now, across the rev range it is transformed, it feels like a sports car now. Yet in contrast it is smoother and quieter than ever before. I love the Lux again!!
Well done KH and JMG, I'm seriously considering buying my Lux back! If you are driving a Lux and its on the standard chip then you are missing out badly. I'm expecting an increase in MPG too! How many of you Lux owners out there have chipped your Lux?
I always felt that the lux engine in my car just felt a little lacking, there may have been the odd occasion where it went reasonably well but it always felt like it was struggling. Most people seem to think the same thing about it and I have certainly read a few reviews that say the same. It never really felt like a sports car engine and when I changed to the 1986 DME and AFM it also lost a little bit of the low down grunt it had with the early injection system. It left the car feeling a little dull and really prompted my recent purchase of a 951.
As such I really wasn't sure what to expect from the chip, I thought Porsche would have done a decent job maybe with a bit of compromise here and there. However from the first time I turned the key I knew somthing was different, after spening so much time working on the engine you get to know how it sounds and how it vibrates. The engine was now sat idling quieter and smoother than it ever had before, its slight lumpiness and stutters were gone. Sitting inside the car many of the little rattles and vibrations were now gone. So far so good, but lets be honest 944's are for driving and should not be sat about idling.
All I can say is the next 15 mins of driving left me and my Dad in awe, the previously slightly ropey and tired engine had been thorougly transformed. The engine wants to go now, across the rev range it is transformed, it feels like a sports car now. Yet in contrast it is smoother and quieter than ever before. I love the Lux again!!
Well done KH and JMG, I'm seriously considering buying my Lux back! If you are driving a Lux and its on the standard chip then you are missing out badly. I'm expecting an increase in MPG too! How many of you Lux owners out there have chipped your Lux?
] It gets tiresome when people go on about the small bhp gains possible with NA engines they completely overlook many other far more important issues. I certainly gained better fuel consumption with mine (this was with a rolling road remap), I think mostly due to reducing the jerkiness of the throttle response allowing more measured progress to be made.
