if you are going to run your car hard you should do mods.

mods make the engine run cooler and longer\safer

best bet for a intercooler if a local scrap yard or something local on ebay

ANYthing is better then nothing

little square on the ip is the ALDA, IP= injection pump aka fuel pump
alda reads how much boost there is and give fuel accordingly, keep lines clean untill you remove it, you want to check the line off the back of the intake to the switch over valve then to the alda

when removed you control the fuel with your throttle position, so if you mash it at a stop, black smoke\ unburnt diesel will be blowing out, good for ppl riding ur azz, aka smoke screen

make sure all the throttle links are adjusted for full travel, not sloppy

#265 are off of 1987 300sd cars i think, bosio is told to be good but cost too much for that many people to buy them, more of a performance nozzle brand

search for diesel purge and do this before new nozzles

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1985 300D - 599,xxxk - blue interior #265 Monark Nozzle, AL129X, 15" Ronals, Gen II Big Brakes hunting
1985 300D - 491,xxxk - in prog-{A-A IC, 3" exhaust, psi\pyro, 28*BTDC, Hella Euros, IP Limiter removal
1985 300TD - 783,xxxk - parts car,used new engine with ALDA cap inplace
1987 Kenworth T-600 8LL 425 CAT Mech. - 6,000,000+k - DEI exhaust wrap, punched through resonators, 1 recent rebuild,