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2004 GMC Yukon Performance Monitors

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Latest Customer Reviews

Hypertech HyperPAC Reviews

Useful product

Reviewed By Pavel B (Albuquerque, NM) Reviewed for a 2004 GMC Yukon —2/7/2008 10:33 PM

I bought HyperPAC hoping to achieve some performance gains and for the various diagnostics programs it offers. Installation is simple and straightforward, uploading performance tunes takes less than 5 minutes. Performance gains are consistent with the dyno charts Hypetech has on their website - modest but noticeable. I tow a trailer and acceleration from standstill and throttle response are better. My benchmark is a steep grade on I-25 before Santa Fe. With the stock tune the rig tops at 50mph on 2nd; after installing the premium fuel tune I was able to take it at 60mph. With this tune engine seems to develop more hp after 4000rpm than with the stock tune. I also like the engine monitor program which allows me to check on transmission temp. I also used the dyno program but you need to weight your truck for accurate results. Regarding fuel economy, there seems to be a modest improvement (14.2 city vs. 13.9 with the stock tune on winter gas-ethanol mix). In sum, I find this product to be useful and fun to use but do not expect miracles.

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DiabloSport inTune I-1000 Tuner Reviews

Cheapest HP available!

Reviewed By Jason P (Whiteville, TN) Reviewed for a 2002 GMC Sierra —9/22/2012 7:01 PM

My truck has the 4.8L engine so after I put 33" tires on it I thought the only way to get my power back was to change the gearing. I was wrong! I`ve only used the 87 octane tune and my truck already feels crisper than it did before I put on the 33's. The ability to correct and firm up my shifts in addition to the extra power is well worth the money. If you are even considering buying one just do it. You will not regret it!

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ScanGauge OBD II Scanner Reviews

Scan Gauge II

Reviewed By Larry B (Issaquah, WA) —9/22/2012 1:40 PM

Great product...........should have purchased one a long time ago. Does exactly what I wanted. The x gauge feature is great. Easy set-up

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