The changes included Ahrens sending Spechenka over jumps to sharpen him up.
"We've just been mixing it up a little bit and hoping that switches him on a little," Ahrens said.
"He is working well and is very fit and healthy."
Spechenka came off some less than stellar lead-up form 12 months ago to win the Caloundra Cup and Ahrens said he would not be surprised if there was a repeat.
The 6-year-old's only placing in eight starts this campaign was a second to Fruehling over 2400m at the Sunshine Coast on June 1.
He was beaten four lengths in Saturday's Tatt's Cup (2200m), won by Ginga Dude.
"Last week is when I started to mix things up with him and I spoke to jockey Ryan Wiggins on Sunday and he said he was very happy with the way he ran on Saturday," Ahrens said.
"He had put in a few runs where he just didn't get himself into the race, but on the weekend Ryan said he travelled well and the strongest part was at the end.
"It looks a good race for him on the weekend and he seems to appreciate Caloundra."
The Jeff Lynds-trained Booming heads weights for the Caloundra Cup with 59kg, ahead of Ipswich Cup winner Shenzhou Steeds on 56.5kg.
Spechenka is on the limit of 54kg.
- AAP