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Subject: Enging Tuner || New Question
Sender's Name: Simon
Question: Hi Alan, i have a year 2000 Audi 1.8T Quattro. I have been told different things about whether this models ECU can be remapped as it is or if the chip has to be upgraded first? Could you give me a price for a remapp/chip and set up on your rolling road please mate and roughly what kind of power gains you might expect. Thanks
Answer: Hi Simon - We supply a chip upgrade for these which works very well without anything else being done. It involves re-writing the EPROM file, which results in more power and torque by raising the boost pressure and dialling in corrections to suit. We'd expect to see in the order of 25/30 bhp and around 40 ft lb torque extra.
 
Subject: Enging Tuner || New Question
Sender's Name: cliff owens
Question: Hi alan I am in the process of fitting a centrifugal supercharger to my 24v bob cosworth and I need to know the best way to approach fuelling the engine. I was going to add an inline high pressure fuel pump and a fuel management unit(boost controlled fuel pressure regulator).This conversion is being done on a small budget therefore i was trying to get away without having to install an aftermarket ecu.
Answer: I doubt the fitting of an additional inline pump would help, as the pressure is controlled by the regulator, and the original pump would still be the limiting factor. A rising rate regulator would certainly help in the absence of anything else. Be very careful to avoid detonation!
 
Subject: Enging Tuner || New Question
Sender's Name: simon jolliff
Question: I have just recently bought a Honda S2000 and i was looking at fitting a turbo or supercharger to it. Are you able to give me an idea of which one would be the best to go for, and any additional upgrades i would have to do to deal with the power increase. If possible would you be able to give me a quote. Many thanks Si
Answer: Hi Si. I have heard of Rotrex blowers being used with these, but not seen one yet. Anything is possible if you have the budget. There's one on ebay for 4000!
 
Subject: Enging Tuner || New Question
Sender's Name: Keith Hookey
Question: Hi Alan Me again! I looked for idle mixture adjustment screw but cannot find. My airflow valve looks different to the one in the Haynes manual-maybe it is non-standard. Space is very limited and it is difficult to see all sides of the unit. I have just noticed the manual refers to fuel cut-off on overrun;it says it is controlled by throttle position sensor. If this is not working this could explain the popping of fuel in the exhaust. How can I check and what controls this mechanism? - I cannot see a vacuum pipe to the ECU
Answer: There isn't a vac pipe. The mass air flow sensor has a by pass screw located in the housing. The chances are it's underneath where you can't see it. It's the only method of mixture adjustment on that model! The throttle pot adjustment can be an issue, but the over run cut off would still occur, as the pot is used only as a point of reference. I would still check out the mixture issue first!
 
Subject: Enging Tuner || New Question
Sender's Name: Keith Hookey
Question: Hi Alan I have a Marlin Cabrio kit car with 2.0 Pinto injection engine (from 1989 Sierra) I have a side exit exhaust made by Custom Chrome; exhaust uses standard cast iron manifold and the two pipes exiting this are then joined into one 2.25 \" pipe which runs vertically to below the chassis and turns at right angles under the car before turning again into the 2\" internal silencer. The system works well except for one thing: when I lift off between 1500 and about 2200 revs. the exhaust pops and bangs which can be quite fum when trying to impress boy racers but most of the time, pootling around the Isle of Wight with my wife, is a great nuisance. I often take the car out of gear when slowing just to stop it. Above and below these figures it seems OK. I have checked and resealed all exhaust joints to no avail. The silencer is new as I had a 2.5\" one before and thought this was too big, allowing air to be sucked back in. When I first bought the car it had a rear exit under-car exhaust and still had the problem although of course it was less noticeable. I have not checked the inlet manifold as this looks complicated and squiring WD40 over the joint with the head when running makes no difference. However, when MOT\'d, it was running fairly weak (less than 1% CO) Any ideas? If it is mixture,I don\'t know how to adjust this on an injection set-up.
Answer: It could just be lean mixture, although short exhausts can have an effect on it as well. The mass air flow sensor has an air by-pass adjuster, which you screw in to richen the mixture. It's best done with a gas analyser, set it at 2.5% CO and see where that gets you. It won't hurt to experiment if you don't have access to one, as it only affects the idle mixture.
 
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