Question by ~*Squishy*~: Couple car questions for someone who knows alot about cars?
Ok first off i heard people have been putting speed chips in their diesel trucks and it increases their fuel economy. I have a 2004 Nissan Maxima and it gets good gas mileage but if i were to put a “speed chip” in my car would it increase my fuel economy…

Also if my car is a 2004 how many miles “guestimately” should it have on it
Im the second owner on the car so hopefully we’ll be good to go for a long long time plus it has really low miles (as so everybody tells me)

Best answer:

Answer by brilock1
i have one in my Merc they do save about 10% on fuel and give more power. Make sure you fit one specific to your engine dont buy one that supposedly fits all. They dont work! if its private use 60-80,000k for business use many more 200,000 plus is possible.
the most important thing is a service history and old mots to confirm miles. if its had lots of drivers 140,000 is about as long as the engine will go without a re-build.

What do you think? Answer below!

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Filed under: Diesel Chips