Originally Posted by TMR
Originally Posted by Andrew@ActiveAutowerke
Ive seen some people using meth kits on the forum but never had the chance to see one in person or dyno one.
Tom posted my dyno sheet earlier ( post #46 ) in this thread where my car was dynoed with a magnaflow catback, removed second cats, proceed and vishnu meth kit, my car hit the 400 club. Its been rock solid, no issues at all.
Good to hear that.
Longboarder (edit, meant to say Longbow64) had that kit too and had lots of issues with CELs - if I remember correctly, fuel mixture and o2 sensor faults.
After he took the kit off and added our performance software, zero issues to date.
Piggybacks are much more prone to these types of issues but certainly do what they advertise in a roundabout type of way. I'm very interested in tuning a meth kit using the stock DME only. I think that the same gains can be achieved. One benefit of the piggybacks however are aftermarket features which usually can not be implemented with the stock DME only.