TOYOTA TUNING SUMMARY
Toyota diesels can be found with 3 or 6pin fuel rail sensors and some like our Rav 4 have a triangular 3pin connector.
6pin connectors are found on the Avensis, Rav4 136bhp, and require a Synergy 2T (£179). Those with the 3pin connector can use a Synergy1 or Synergy 2B. The latter connects to 2 engine sensors and gives enhanced performance by increasing the boost pressure by 2-3psi at max boost and 4-5psi at low rpm below max boost. The extra air is beneficial in ensuing efficient combustion of the extra fuel, reduces smoke even further, helps boost economy and reduces combustion temperatures. The modest rise in boost pressure has no side effects and indeed, many current diesels run with similar levels (19psi max - Mondeo /X-Type diesel reach a max of upto 22psi)
CUSTOMER FEEDBACK.
2008 Avensis 2.2 150bhp.
"Thanks for your assistance last week. Been down to Cheshire this week so managed to clock up over 500 miles since the Synergy was fitted and I am delighted. I am running the box on medium / medium. The car is much more responsive at low revs and accelerates much more quickly without having use loads of revs. Fuel consumption has improved by about 5 mpg. I did an almost identical trip about six weeks ago and got 46mpg. This time 52. Impressive." Thanks Mike.
AVENSIS 2L 116
...Second impressions are extremely positive, it has made the car much easier to drive in general with a lot less gear changing and a smooth response, and particularly for economy. Cruise control is also much improved. Initial indications are that my normal average consumption for this type of gentle driving (max 70mph) is 60mpg on the average readout, 52mpg in reality.
The post synergy (setting 5) average consumption
on the readout looks like 73mpg (after 100miles), which would correct to
64mpg by taking off the normal 15% off, and potentially 60mpg if we take
another 4mpg off for the “synergy effect”. That equates conservatively to
8mpg, 15%. I will collate a bit more information over the next month or so
and let you know.
2008 LEXUS 2.2 177BHP
We were approached by an Lexus dealer employee who mentioned that some customers were complaining about the new Lexus diesels being disappointingly flat below 2500rpm and then 'taking off' as the revs past this point. In fact this is not an uncommon scenario with 2008/9 diesels due no doubt, to manufacturers fudging the emissions tests by flat spots engineered into the torque curve at low rpm when the turbo us not fully up to speed.
Needless to say a Turbotune 1 transformed the driving experience and brought it up to customer expectations with no side effects on the particulate filter system.