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Originally Posted by ldavies
Are you not the guy that started this thread asking about a standalone and wich one therefore you no very little.
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Nope, that was Alex dude. I'm of the camp 'Predator or nothing', being able to return the car to standard is more important to me than out and out tuning capabilities - I'd like to think I know a bit about mapping, since I've mapped a Motec (for formula student car) for the last 2 years, but I'm no way professing to being even close to an expert.
I'm honestly not having a go, but I am intrigued as to how you're ditching the pred so quickly that's all and I'm concerned you're doing it with the wrong mind set. Firstly you need to know the limits of RM (Road Mapping) and RR maps - You're never going to be able to obtain the fine tuning of RR maps using the road. Road does have it's benefits though, the engine is operating in is actual environment, on an RR it isn't and this can produce anomalies if the mapper isn't careful. So there's pluses and minuses for both - but nothing inherently wrong with RM. But if you're paying £5xx for something I'd hope you had researched accordingly.
I do think you've jumped the gun a bit and come to the conclusion that you're 108 wheel figure is purely down to the ecu/map. Where you've gone wrong is not having a RR beforehand to know what the output was before.
I'm going to activate detective mode here and make a suggestion based on what I've read - please correct if wrong as do skim read some longer posts...
Andy notes that the car is a 'bit smokey' prior to install and mapping.
After install and map, you say
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And all i can say guys is this is by far the best money ive spent on my gti, the car just pulls of and flies through the rpm and now the rpm as been raised its alot more fun and bthe power is unreal.
No flat spots, and the torque is there ready for when you want to put your foot down and overtake etc.
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A few weeks later you get a 108 wheel figure.
Andy offers to correct based on latest available info regarding AFR values.
You don't take up this offer and decide to sell the pred.
Now, correct me if I'm wrong but this apparent improved transformation of the engine and a wheel figure of 108 suggests to me there's something not right with the engine in the first place, either it's chuffed and/or cam timing is out?
A rolling road prior to the install would confirm this... in fact, you've stuck the OE ecu back on yeah? Go RR it - that'll confirm whether the engine is at fault or the mapping (although where you expect to find 20 hp from a change in the AFR is beyond me)
Furthermore, you don't even take up the offer Andy's given (assuming for free) to correct the fuelling, which is bizarre. Even if it didn't correct your problems it was still worth pursuing this route first surely before selling up???
Now it sounds as though I'm slagging you off and I'm certainly not but I'm keen to see how you've come to your conclusions...