Quote:
Originally Posted by Perth-86
Shall follow the lead on that one - I haven't been impressed with them on a stock engine so far, two be honest.
In fact - We did a dyno day the other day.
Mine made 143.5 which was lower than a completely stock auto on the same day which did 144.4
It was pretty embarrassing!!
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as s2d4 said those block are ment to shift the peak power lower in the rpm range not rearly increase peak power.
As our 98 fuel is not much good, the power you make on 98 petrol is very dependant on the brand of fuel your using.
unitedP100 fuel was better but has been pulled from sale.
BP ultimate or Shell seems the best 98 but on stock tune you can still get significant knock which drops your IAM and reduces power.