There is some cars I worked on:
Audi 20V n/a - my favorite field. Not because of successive engine, but even contrariwise: get 100hp/l is real difficult. We have n/a 4wd class in our rally-sprint (similar to rally but shorter distance in special stages). And there is only two appropriate models: Audi 20V quattro or Subaru Impreza 2.5RS. About 6 Audis is tuned by me. Two using VEMS. Now Impro to come.
Mazda F 1.5liter. Turbo without any changes inside engine. 0.4bar boost at max torque and even 0.7bar @ high Rpm. Not great success in figures, but was pleasure to tune.
BMW with '99 M3 engine. It runs. But with simple 4 position VANOS control from misc outputs. 300Hp/300Nm.
Audi 16V n/a. 1847cc. Headworks. exhaust cam as intake. 160Hp 200Nm. Needs better exhaust.
Opel c20xe. (my knock page object). 190Hp on stock cams.
Volvo 740 turbo. 8V engine with some improvements like big intercooler and bigger turbo. Needs better exhaust manifold. OE is restrictive.
1.6L 8V VW crossflow. Succesive project: wide powerband from 4500 up to 8500 and 100hp/l
Mithubishi Eclipse gen1. 2L turbo. 4WD. Hybrid turbo inside OE turbo housing. About 360Hp and 450Nm @1.5bar boost. Streetable with pleasure.
Impreza 2.5RS '99. Using 24-1. It will be interesting to see how engine improvements rise stock power to something over 200hp. Now ~160hp. Looks engine have big potencial: short strocker, place for big valves etc.
Mithubishi Galant 4g63 2L n/a. For same n/a 4WD class. OE optical sensor with 24&1 disc. Strange engine with huge intake ports and low power. 160hp.
Few Audi20VT. Stronger is using GT3076R ball bearing, with some modified engine internals such as rods, pistons, headwork.
Some others for rally-sprint.
Toyota 2L 16V for rally-cross. Engine sits in VW Golf3. 60-2 alpha-n. Currently small head. But with some cams, ITBs and other mods engine produces about 175hp and ~225Nm in middle of very usable powerband from 3000 to 6000Rpm. It is OK for our short tracks. Big head under construction.
processing:
LADA VFTS replica.
Jaguar XJS V12 with two VEMS. will be alpha-N.
Jaguar Sovereign 4.2L '86
pre 2000 Imprezas Turbo.
Some Audi 20VT
M3 4cylinder!
Toyota 3s-gte
Corrado 16VT.
Calibra turbo. Target over 500Hp.