Acceleration top, speed bad…

Hi LeutZ… I have a problem which I don’t think is one or maybe one could be…. Fact: Golf 3 GT BJ: 93 90PS 1.8 MKB: ABS tyres: 7.5X16inch 215/40/R16 Good Year Eagle F1… And I just tested my top speed my test track was from Hamburg/Nettelnburg the A25 to Geesthacht (for the local *G*) motorway is a distance of 22km and there I gave gas once until I didn’t go… 1. Try: Drive all gears up to 5500 UPM final speedkei t 178 at 4900 UPM 2.Test: Normal accelerates 5 gears pure and gas fully penetrated emd speed 172 then fell short after AB exit Bergedorf then I was so fast again around 178 and that quite at 4900 UPM… What seemed strange to me when I drove out the gears up to 5500 UPM was I in the 4th walk at 160 (all speedometers) and then I sounded in the 5th and it seemed to me as if I was standing there was no acceleration more correct it took forever until I was on 178 was the 5th gang so laaaaaaaaaaaaaaaang ?? well, maybe you can express yourself because I have my appearance 180 Max…is it so heavy on the mature ? I drive around with 2.2 bar air pressure maybe it can have something to do with it … well what makes me a little more unsure that my colleague also manages Golf 3 GL 90 PS ABS motor… with 175 winter mature over 200….we were 2 people in the car me and he then 2 pcs 2 monitor and 2 bags vol. L packed… Do I have to worry or not ??? P.S.: Luffi new half year old, oil change made 10W40 Valvoline no 10000 km ago the oil is not smeared nothing so not black super clean nor…ignition candles are new Beru Ultra…