FC on RON95 is not good as RON97 for Peugeot308 turbo

It seemed that AHW308 consumed 5~10% more RON95 fuel per 100km during previous 1500km Raya Trip than it took out of RON97 on earlier 2000km trip across Malayan Peninsular, but I forgot the traffic flows and the way I tekaned the accelerator pedal between the two trips were entirely different in fashion. So, I was WRONG to conclude that Peugeot 308Turbo consumes more fuel on RON95 than it does on RON97 .

Over the last weekend however, I had an opportunity to test similar car running on RON95 on similar route [as earlier trip on RON97] under almost similar controlled environment. They were daylight trips from BBBangi to JB and back covering a total distance of approximately 600km. In both situations the car ran on AUTOcruise most of the time within legal speed limits. The aircond was set to 21degC throughout the trip.

Surprisingly I found that the average fuel consumption for both trips which run on RON97 and RON95 were almost identical. The trip computer displays below was taken at the end of the trip run on RON95.

The average RON95 fuel consumption for the 586km trip was:
6.2lit./100km i.e 11.16sen per km [@RM1.80/liter] or, 16.1km/liter or 45.8mpg!

For the 586km trip the car consumed RM 65.40 or 36.33liter of RON95 i.e slightly over 5/8 but less than 3/4 tank of fuel. The remaining fuel is more than enough for another trip to JB!!!

Now it is proven TRUE that in term of energy content there is no different between RON95 and RON97! [Click HERE to see fuel consumption for similar car running on RON97]

Next test is to compare high-rev performance [0~100km/hr acceleration and sustainable top speed] between RON95 and RON97.

The best average fuel consumption by my308 on RON95 was 6.0liter/100km [16.7 km/liter or 10.8sen/km] when the car was running constantly at 92km/hr read by the speedo [or exactly 90km/hr on the GPS] on a trip along PLUS covering 291km on October 4th. 2009.

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ECU Remapping may Damage your Turbo if

Turbo Engines engines rely heavily on computer controlled Engine_management Control Unit [ECU]. Basically the engine has an array of sensors which monitor lots of things such as throttle position, crank position, airflow etc. These signals are sent to the ECU, which processes the information received to give the best engine performance for any given driving condition.

ECU remapping can alter engine performance for higher output and/or for better fuel consumption, nevertheless be extra careful even if the tuner a top programmer.

There are many tuners offering what seem like custom ECU remapping. Most of these tuners use and alter programs that are cheaply available through the internet or other sources and are not ngam with the car engine requirements. These can actually damage the turbo/engine.

Remaping alone may not be adequate for the upgrade. Get a professional to do the job and you must get ready to spend on hardware upgrade as well - without which you will need to spend more money on repair bills later.

For performance you will probably reprogram the ECU to control ignition timing advance, force more fuel and more air into the combustion chambers, and make the turbo overspin and hold on to higher pressure than the turbo unit/system can handle and delay/never let the BOV open, which will ultimately damage it. Solution - get a better turbo system before remapping!For fuel economy and power - if you are familiar with nitro-methane RCM car engines you will know what to do at the expense of engine overheating, simply make the air-fuel mixture lean. The same applies to EP6DT engines. Go on reprogram the ECU at your own risk and save money on fuel to partially pay for the damage later on.For instance, PSA produces different EP6DT engine outputs [140THP, 150THP, 156THP, 175THP, 200THP....] based on similar engine but for each output there is not just the difference in ECU program but the turbo system and other hardware are unique .

Btw, even a stock Pug 308 THP140 is capable of hitting 100km/hr in around 9 secs, 1000m standing in less than 30sec, top speed more than 200km/hr .... still not enough for a 1.6liter family hatch?

Think about it! Again and again.

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Peugeot 308 Turbo mk1 Maintenance Cost

AHW308 Maintenance cost up to 60,000km

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How To Repair A Broken Turbo Air Intake Hose

If you have a car powered by EP6DT type of engine, the time will certainly come when your air intake hose breaks apart around the turbo flange. Some if not all authorised@auta-rised service centers may charge you up to around RM500 to replace it if the warranty was voided/expired.

Actually you dont have to spend that much because it is quite easy to repair by yourself (it will take you in less than 30 minutes) if you already have the following items...

(Rapid Araldite (epoxy rasin), Black RTV Silocone, Super Glue, PTFE Tape, Cloth Tape/Strip (1/2" x 6") and flat/matte black paint spray-optional).

The following simple steps show in details how I repaired the broken hose on a Citroen C4 Picasso.

1. Clean the broken portions of the hose...

and then stick them up together back in place using super glue.

2. Apply a thin layer of epoxy resin around the outside surface of the damaged part of the hose.

3. Wrap around with a layer of cloth strip before the resin is set. Do NOT use fiberglass cloth.

4. Apply another layer of epoxy resin on the cloth which already wrapped around the hose end.

5. Apply a thin layer of black RTV silicone on the inside surface of the hose to improve air tightness.

6. Wrap around with three layers of PTFE tape...

7. Spray two or three coats of flat/matte black paint on the PTFE tape which is already wrapped around the hose in (6).

QED!

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Peugeot 308THP TKOs Nissan Sentra Turbo

Last Thursday around 4:30am as I was cruising at speed limits from Kuantan to Kuala Lumpur on Karak Expressway suddenly a Nissan Sentra Turbo turned on hi-beams from behind and overtook me in an unfavorable manner.

At first I was forced to follow the car from a comfortable distance while sustaining the same speeds without any intention to cucuk - just to observe and record the drivers behavior, his skill as well as the raw power/handling of his car. Admittedly the car looks powerful on the straight/level part of the Expressway until the last long ascend before Genting Sempah Tunnel where it began to lose power.

Could it be due to mismatch between the gearbox and the engine torque curve... or the driver picked the wrong gear?

The Nissan Sentra Turbo with big wheels/tyres, big exhaust box/tailpipe which made lots of big noise was Technically Knocked Out (TKO) by a fully laden stock Peugeot 308 THP (carrying 4 adults including the driver).

Watch similar drama with Range Rover Kahn
More CrazyVDOs available HERE

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