968 Performance Chips - 7100A, 7700AT
#77
Addict
Rennlist Member
Rennlist Member
If I'd known installing a performance chip was fraught with all these potential problems, I'd still be stock. When I installed the Autothority chip in my 928, it was a non-event. I've never dynoed it, and I can't really tell any difference in performance..but I do smell more unburned gas at idle..but road trip mpg is about the same. I do feel a difference (I think) with the chip in the 968...then again, maybe I'm just goosing it more? Unless you play around in the high revs, I'm not sure a performance chip is worth the cost.
Harvey
Harvey
#79
Nordschleife Master
Originally Posted by Hughett
I'm getting 26.5 mpg. Think I should get a new O2 Sensor? Could that upset the Motronic?
Harvey
Harvey
#81
Rennlist Member
Originally Posted by Hughett
Unless you play around in the high revs, I'm not sure a performance chip is worth the cost.
Harvey
Harvey
Does your chip manufacturer have a money back guarantee? I would suggest you return it for a Promax chip if you don't notice a significant difference. Ofcourse the same rule should apply for the Promax chip as well to be fair.
Regards.
Raj
#82
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Rennlist Member
Thanks, Raj,
I have high respect for your advice but, for right now, I don't dare touch the chip as all seems to have sorted itself out. However, if I get another blast of smoke, it'll be a different story. I think I will, however, buy a new O2 sensor and am waiting on my new B&B muffler to be built and shipped. I was told that B&B makes them on demand for the 968 now.
Perhaps I don't need a new 02 Sensor but it doesn't appear to be very new. However, if there's a chance of that confusing the performance chip/Motronic combo...I'll pass.
Harvey
I have high respect for your advice but, for right now, I don't dare touch the chip as all seems to have sorted itself out. However, if I get another blast of smoke, it'll be a different story. I think I will, however, buy a new O2 sensor and am waiting on my new B&B muffler to be built and shipped. I was told that B&B makes them on demand for the 968 now.
Perhaps I don't need a new 02 Sensor but it doesn't appear to be very new. However, if there's a chance of that confusing the performance chip/Motronic combo...I'll pass.
Harvey
#84
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Rennlist Member
Rennlist Member
I dunno. I had just heard that changing sensors at 60k miles is a tuneup thing. The car is running good so maybe I don't need to. Some people say they get better than 26.5mpg and if a sensor change would improve that it might be worth it. On the other hand, others say they get worse mpg. The car's a hobby but perhaps I should save the $$ for when something for real goes out on it....like steering rack, bearings, or something. Owning a 928 one gets jumpy about things. I have a complete set of spare brains, relays, fuel pump, coil, etc. for both cars. I suspect that someday the 968 will start requiring these parts about as often as the 928 does. But I hope not...
Harvey
Harvey
#85
Rennlist Member
Harvery, I see what you mean. I would definitely stock up on a spare DME, MAF and you should have a spare DME relay in the car at all times. Both items can be had relatively cheap when you don't need them but cost an arm and a leg when you do.
Regards.
Raj
Regards.
Raj