Heffner's cars are quick, but I get the impression that most of the turbo Lambos aren't consistent.

 

There is a huge difference between various twin turbo setups, depending on the options chosen and $$$$$$ invested. Underground ranges from 650whp pump/850whp race to 1050whp pump/1500whp race and higher for special projects, up to over 1900whp that you see breaking records (and unfortunately crashing) at the TX mile. Heffner has similar packages (800, 1000, 1200 bhp). So yes, there will be a wide difference depending on what is done to the individual car.

 

This car is a e-gear, whit "only" 740whp with maybe 1700kg, so 138 trap speed is good, the E.T for me is not importante, and the gt-r of the line is a beast, they are very hard to match.

best 60-130 mph in this car is 5.5 seg, which is a strong number, gallardos are not strong in 1/4 mile.

Allan is a member here, better than anyone to talk, but i think on pump gas he makes around 800whp and more than 1000whp on 100. is best 60-130 is 4.6, but there are a 4.0 seg in another heffner gallardo, with the same kit as allan.

This is just a bolt on kit with maybe 8 psi, and for me is impressive the power this cars can make with only a few PSI.