Using the ECI modem with another router will not increase speeds, except for maybe WI-FI.
But looking at "skyeci"
he sees:
Eci (66 -68mb)
8800nl (62-65mb, depending on conditions it seems and large snrm variance between the 8800 & eci)
Sr102(60mb)
Do you not think I'll see extra speed passed on from the eci modem to a separate router on my ECI cabinet as opposed to using the Sr102 and hh5?
I do see faster sync using the eci unlocked modem (bt ) against my hg612 &8800nl & the sr102 but this was ONLY after g.inp was activated on my eci cab. You will only know if it truly helps by testing as no other way of knowing..
Jsamuel on this forum will load openwrt and mod the locked modem so you can get stats from it and lists on ebay. He did mine (as I didnt want to do it myself)and it does allow the stats and gave me the higher sync compared to all the others so for me it works but cant really say for yours...
You could try the modem first or get it modded so you can see the stats and see if it helps...
Note my figures are when using a modem and router as seperates and not as all in ones apart from the sr102..The sync rates are from the modem stats and not through the router on speed tests etc..
I use the 8800nl in bridge mode only (as a modem) and sent the stats to billion as it does not sync as high as the eci on the several syncs done at different times post g.inp. I am waiting for a response as they asked for the stats for both which they are now looking at so I await a response..