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Subject: Peugeot 306 XSi
Sender's Name: Ray Delaforce
Question: The engine suffers from hesitation and rough running when travelling at either slow speeds 30-40mph or when crusing at a constant speed with very little throttle actuation. At low speeds 20-30mph a definate step can be felt in the engine power even without altering the position of the throttle. Travelling at less than 30mph a severe drop in revs is felt through the transmission when releasing the throttle. If I let the car free wheel the revs stay at around 1400rpm when travelling at speeds above 20mph.
Answer: It sounds like a management fault, at least in part. A rolling road session and a code read may well throw it up. Possibilities are poor mixture control or a throttle potentiometer fault. The system is designed to shut off fuel when on a trailing throttle over a certain rpm. I can only suggest we take a look at it! Incidentally, if you fancy giving it a performance tweak, we have found the air filter and chip conversion very effective on these cars !
 
Subject: Nova
Sender's Name: Brent
Question: The car has lost top end power due to a head skim and gasket replacement how can i solve it?
Answer: I doubt that you have lost power due to the head skim, unless someone has gone mad with the grinder ! It's far more likely that the cam timing or ignition timing is out. Another possibility is a sensor failure of some kind. Sounds like a rolling road session is called for ! (?30 plus vat )
 
Subject: Astra 1.3
Sender's Name: Michael Hollow
Question: Hi , I have a Vauxhall Astra 1.3 1990. I have fitted a bolt on pipercross filter and a crank vent but long for better performance. Can you give me any suggestions on products or performance tuning that are available and how much it costs. Ideally i would like to end up over 100bhp without spending out a fortune.
Answer: Always a tough question to answer ! It all depends on your budget. Usually you can make some small gains, by fitting alternative air filters or carburettors. I would guess yours has a Pierburg, and would definitely go better with a Weber conversion . After that you are into engine re-design, and you have to make the big leap. If you have no constraints, there is nothing better than putting a bigger engine in it ! Let know how much you would like to spend on it, and I'll see what we can come up with.
 
Subject: Omega 24 valve V6
Sender's Name: Michael Hollow
Question: Hi , I have a Vauxhall Astra 1.3 1990. I have fitted a bolt on pipercross filter and a crank vent but long for better performance. Can you give me any suggestions on products or performance tuning that are available and how much it costs. Ideally i would like to end up over 100bhp without spending out a fortune.
Answer: Always a tough question to answer ! It all depends on your budget. Usually you can make some small gains, by fitting alternative air filters or carburettors. I would guess yours has a Pierburg, and would definitely go better with a Weber conversion . After that you are into engine re-design, and you have to make the big leap. If you have no constraints, there is nothing better than putting a bigger engine in it ! Let know how much you would like to spend on it, and I'll see what we can come up with.
 
Subject: Omega 24 valve V6
Sender's Name: Alex Gray
Question: I want to beef up the performance of my Vauxhall Omega elite (3Ltr V6 24 valve). The thing's done a few miles so the handling isn't as sharp as it might be.
Answer: We can provide a very effective superchip modification for the 24v engine.It comes in the form of a flash chip re-programme, which will liberate about 10 bhp, right in the middle of the rev range, where you need it! There is a possibility that we can also supply polyflex suspension bushes, which will improve the steering response. In any event, with a high mileage, a new set of shocks would be a good idea.
 
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