Member, P500 Sport, MDM on (>800)
Join Date: Dec 2012
Location: West London/Heathrow - UK
Thanked 153 Times in 131 Posts
It does sound as though the GROM unit route will be good for what you want considering you won't be driving much and don't wish to spend too much to add this functionality. The only aspects to keep in mind are that the OEM audio modules are getting older now and failing more often/frequently. Each module has multiple points of failure and of course, the majority of them are relatively expensive to fix/resolve! So, longer term, you'll most likely need to shell out substantial amounts to keep it all working/running. Fingers crossed your modules you have currently last a good while, but it's a question of when and not if they fail ...
The thread linked by acmilano is where a number of members have got the xtrons unit and tweaked/fiddled/faffed around with it in order to make things work/fit well. If you are a 'tinkerer' then one of these units along with the info/knowledge in the thread should help when/if there's niggles/issues etc.
2003 Ex-Police E39 530 Diesel Touring. Alpine White, 260,000+ Miles & climbing!
19" Hartge Nova 5 - with custom painted 'Flash Chrome' centres & Polished Lips (set of 5)
19" Hartge Nova 5 - Awaiting custom re-finish (set of 4)
19" Hartge Classic - with custom powder coated centres in shadow chrome & diamond cut/no lacquer lips (set of 5)
20" Hartge Classic - Awaiting custom re-finish
19" 3Pc Forged wheels - ID retained until re-built & finished (2 sets)
20" 3Pc Forged wheels -ID retained until re-built & finished
19" Centres - ID retained until rebuilt & finished
Full Custom Audio install - Arc Audio KS Mini ampliifers. DLS 5.25" 2 way front components & 4" 2 way co-axials. JL Audio 8W3-V3 subwoofer in stealth enclosure. Parrot Asteroid Smart head unit, custom door builds for DLS front stage & Earthquake SWS6 flatline subwoofers, custom rear pillar speaker pods. LumiDock iPod dock,
H&R Springs, ExoticsTuning front lip spoiler, Sport F/R bumpers upgrade, Carbon Fibre effect printed Vinyl roof wrap, High gloss black vinyl window trim wrap, Hartge bonnet/hood & tailgate badges, rear rooftip spoiler, matt Black kidney grille, projector foglamps.
Hartge auto gearlever, Hartge Handbrake handle, Hartge door sill strips, E46 M3 CSL Alcantara/Tri-stitch SMG steering wheel, full Black Leather Sport seats,
Custom ECU re-map biased for more Power & Torque in Steptronic mode, EGR delete, K&N induction kit, Stainless steel de-cat, Stainless steel exhaust backbox with twin oval pipes. Manual 5 spd gearbox conversion.
Plenty more modifications to come!