Lotus is braced for a struggle at this weekend's Canadian Grand Prix as the team does not expect the characteristics of the Circuit Gilles Villeneuve to suit the E22.
Lotus has endured a troublesome start to the 2014 season, with a pair of eighth places from Romain Grosjean in Spain and Monaco the only points scored so far this year.
"It’s probably going to be a bit of a tricky one," technical director Nick Chester said of the upcoming event.
"On the one hand we’re going to have the soft and super-soft tyres, which should be better for us. On the other hand Canada’s got long straights, which we feel might not be great for us.
"There are also some big braking points and at some races this year we’ve felt our braking isn’t as good as it should be. So for the E22 it’s a balance between performing quite well on the softer tyres and maybe losing out on power and braking. We’re going to do all we can to improve those areas before we go."
Chester also conceded that Lotus expected to be more competitive in Monaco.
"Honestly we expected to be pretty quick in Monaco," he said.
"The bottom line is that we were off the pace in the low-speed corners. So we feel we were losing out on mechanical grip, which may be a function of suspension - including how the car rides over any bumps - or of us not getting the tyres in the right operating window.
"Part of our response has been to do work on the suspension rigs before we go to Canada, to see if we can rectify this."