Car Sleems To Have Gotten Slower Over Time

[nsta]

Dont actually know whats cause this, but ill explain whats been done since having it.I think the car was at its peak when it was stock with a pod + 3" exhaust (no cat)

Then a few things went in.......

265 r 235 f tyres with heavy wheels

fmic

removed cold air box to fit cooler, and never placed back in(long story)

gapped sparkies to .5-.6mm as i was getting alot of missing and couldnt increase boost (this may be a big factor?)

bought the sau boost tap and set to .8bar atm

put in a split dump pipe

i feel a combination of the too low gapping of the sparkies, and the big heavy wheel/tyr combo over stock is causing me too have made the big loss.

Is it right for my car to be running rich at this level w/o tune?how can you generally tell if your car is running rich, i most definitely think mine is.

What would you guys reccomend me do to fix my loss?

[tridentt150v]

gap is too small for 0.8 bar, spark would be weak, thus fuel problems

What sort of dump?

[nsta]

Thats what i was thinking aswell, may just replace my sparkies, whats sparkies would you reccomend?may just be that theyve gotten weak over time, car has done lots of k's now. I have a Split Dump into a 3" exhaust the whole way. The guys definitely got rid of the missing problem and thus let me increase the boost, but how much have i lost in the process.

How low should the sparkies go when gapped on a failry stockish car like mine?..... 0.8mm?

[mad082]

by having 265 tyres on the rear you have added (depending on the tre size you had on there before hand) up to 120mm of extra tread on the rear, plus between 20 and 40mm of tread on the front. that is a fair bit of resistance.

[Interloper]

i think your just used to the current power and it starts to feel slow

when i first got my car it felt quick but now i think its not that quick