Tiago Monteiro and Narain Karthikeyan popped in when Toyota boss Tsutomu Tomita offered them the chance to get to know their engine supplier.
"I can now understand why the engines we use are so strong and reliable," Karthikeyan told the Indian Telegraph newspaper.
Meanwhile, sporting director Trevor Carlin - after Minardi outpaced his yellow clad team at Monaco - said the appointment of Renault tester Franck Montagny should be a boost.
"(Montagny) will give us an idea of where we are overall with ... the car," he predicted.
- GMM