Originally Posted by
Sp3no
Right, basically the ST170 engine is the 2l Zetec but it has had the nuts tuned off it in the factory, this means that it is already at a very high level of tune. This causes problems as it becomes very hard (and expensive) to wring out even more power.
As stated previously unfortunately the ST170 was not as it seemed, most cars as standard are only putting out figures of between 150-160bhp, seen them as low as 145!! so already you have a mountain to climb to get it putting out the power expected. There are a few putting out factory figures but they are few and far between.
On the venier cam issue, you DONT have to lose your VVT, the norm is to fit a vernier to the exhaust cam ONLY. Retarding the timing a wee bit can release between 1-8bhp depending on the engine in question.
With a decent cat back exhaust, filter, and dream science type map i would be happy if the car put out figures close to 170bhp.
I have a mongoose cat back system, K&N Typhoon filter and a ported throttle body. The above might have only gained me 1-2bhp but it has made the car nicer to drive and it picks up allot quicker
Thanks for your informative post.
I think I'm just going to stay with an ECU Remap and forget trying to get the engine work done. I know I'd be lucky to get much more out of 1 of these cars without spending stupid money, but every little helps as they say
I'm just trying to work out whether to try and track down a 2nd hand Stratagem unit and then get Dreamscience to laod it with the ST170s maps, or just go for a single shot Custom remap.
How would a remap work if the battery had to be disconnected, as I hear this resets the ECU?
Thanks.
Craig