Ive not driven a map'd or D1 TC zed before, so dont flame me but i find the standard throttle response now with the uprated whiteline diff poly bush super quick. In the dry with TC off, i can spin the rears up in 1st, 2nd and a chirp in 3rd anyways so any more ‘response’ is only going to give me less traction at wide open throttle.
Plus when actually driving quickly you’re at wide open throttle, so there’s zero benefit with the controller then either......
Various comparison sites and calling around i found both Adrian Flux and Keith Michaels to be cheapest for me.
32yrs old, home owner, used for work, own another vehicle, 11yrs ncb, £300 excess, Birmingham post code, all mods listed.
This year ive been on Silverstone national and Rockingham infield, ive heard Combe is QUICK!! couple of 5th gear straights and not very wide either.
28psi (cold) and you'll be fine
I say go for it, do some local checks on the rolling road outfit more so than the mapping software to gauge their feedback.
Along with the service and plenum spacer, while thats all going ahead take out the MAF and give that a good clean. By the time the other work has been done, it will be fully dried out ready to re fit. Check and adjust tyre pressures correctly too.