Tom_Spangler (Forum Supporter) said:Adrian_Thompson (Forum Supporter) said:Actually lots of experience with old 80s turbos. Including 930's and 951's. A 951 has positively instant throttle response in comparison with an old four speed 930. My experience of a 930 goes something like this. 30 mph in second gear, floor it.......30.5 mph, 31 mph, 31 1/2 mph, 35 mph 40 mph 55 mph holy E36 M3 the end of the road coming at me through a time warp mph. Yes, the 951 is laggy with a relatively narrow talk bend by modern standards, but they still pull harder off of corners than the numbers above would lead you to believe.
Did you ever drive my 951? Lordy, did that thing have some turbo lag. It was a terrible autocross car because of it.
A modern engine is going to be better than anything that was put into a 944 back in the day, hands down. More durable, torquier, wider powerband, better economy, more reliable, cleaner, you name it. I love 944s, but the engines were not the strong suit of those cars.
Man I'm beginning to regret bringing up the 944. Yup, I drove your 951 and at least three other 951's over the years. Yes they are laggy, but I stand by my assertion. Compared to a CIS (Aka Bosch K jetronic, AKA high pressure mechanical fire hose pissing into your intake via a toilet bowl with five miles of plumbing) 4 speed 930, and in comparison your J Jetronic 951 has hair trigger sport bike throttle response. Same with other 80's turbos. They are laggy. I am not comparing the twins to 944's, other have done that before.