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Subject: Enging Tuner || New Question
Sender's Name: John Williams (again)
Question: XR3i- Thanks for the Weak Mixture idea... Find it hard to accept that most of garages i\'ve already been to, don\'t seem to want,,,or know how to use their tuning gear(where have all the Engineers gone ehh)..? The XR3i problem seemed to have coincided with the petrol tank having recently being changed albeit (by the same local cowboy garage).This install caused also the PETROL gauge to be very inaccurate, although it\'s prob NOT linked to the weak mix problem your answer gave, but it may..?? Thanks again Ill let you know if I find someone who knows how to use a Rollin\' Road.(unlikelly in N.Wales..!!!) Cheers..JW
Answer: A fuel pressure and flow check sounds like a good idea.. Best of luck!
 
Subject: Enging Tuner || New Question
Sender's Name: John Williams
Question: 1987 XR3i- Performance deteriorated so parts changed: plugs,leads,dizzy inc elec module & cap (orange one).?50 Car checked on by local BOSCH Tuning station but nothing was found ?30. Car accelerates like an 1100cc (baahh) when cold but does actually go, albeit with NOT the normal accelaration of an XR3i 1600cc. If car is stopped for 5 mins the next journey done means a rapid deterioration in firing and has no ability to take any pedal movement accelaration without choking to death. Amazingly the Idling seems fine. By thi stage the exhaust is popping baddly and the car has the power of a 50cc moped Car is in Excellent condition so reluctant to give to local scrapman..!! Cheers John Williams
Answer: Hello John - It sounds like a weak mixture. Have you a rolling road near you? it will need checking out under load.
 
Subject: Enging Tuner || New Question
Sender's Name: Mark Ross
Question: Hi Alan, My Audi Cab shudders and splutters (occasionally) when pressure is taken off the accelerator when in 3rd or 4th gear. My Audi garage can\'t seem to find a problem with it. Any ideas? Cheers!
Answer: Hi.. It's a tough one when the manufacturer's agents can't help! I'd suggest getting it on a rolling road, as most operators are far more experienced at fault finding.
 
Subject: Enging Tuner || New Question
Sender's Name: Ant
Question: I have a 1996 clio Mk1 phase 3 with 1149 D type engine. Have replaced air filter, oil & filter, plugs & HT leads and its running a fair bit smoother and pulls better too. Is there anything else i can easily do to it to improve performance or economy? I measured 0-60mph time at 13.5s :p probs could chop 0.5s off that by shifting later... Or should i just leave it alone? I don\'t really like the idea of those resistor type ECU mods - they seem to waste petrol and damage engines from what i\'ve heard... Thanks for any advice
Answer: Hi.. Superchips could probably come up with something for you. The cost would be in the region of ?270, and would add a few bhp. Of course, as you say, you could just leave it alone!
 
Subject: Enging Tuner || New Question
Sender's Name: Paul
Question: Hi Alan, I fitted a boost gauge and a GBE valve to my 95 Rover 220 Coupe (T25 turbo/recirc DV), even with the valve fully closed it only boosts to about 13psi for a second then falls back to 10psi. What is likely to be causing this as I was hoping to set it to 13psi.
Answer: Hi.. You may find it difficult to maintain full boost at high rpm. Have you had any kind of device fitted to control overboost? Normally, these will allow you to run to 14 psi, and will then cut after a few seconds.
 
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