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post #1 of 3 (permalink) Old 02-16-2011, 01:57 PM Thread Starter
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90 20V Beginner

Hey guys, I'm looking to tune up my first engine. I picked up an old 1990 20v Quattro about a year ago that had been completely neglected. The car was disgusting and clearly hadn't been cared for whatsoever. Since I was 16 I've dreamed of snagging one of these and fixing it up, so I'm selling my Porsche 944 and diving in. I've spent hundreds of hours on various cars cleaning up and restoring cosmetic problems with my car, but never had much of a chance to do any heavier mechanical work. I'm looking to get the car to 200hp. I was wondering if you guys could help me out with some of my ideas, and any suggestions on tuning up this thing. One draw back is I'm coming on the end of my college career and money is tight so I don't have thousands to drop at once but was hoping to build it up slowly.
First there are holes in both the resonator and the rear muffler, so a new exhaust system is first on my list. I've spent some time reading, and I liked the stuff the royal rogue suggested because of the price. He used 2.5 in system with a Dynomax 24215 for the resonator and a Dynomax 17748 for the rear muffler with no cat. Since its under 100 bucks for the parts, it really appealed to me. He said he loves the sound and saw some performance increases. Do you think its worth spending quite a bit more for a 3' cat back?

After that I was looking to upgrade to the 034 EFI Conversion Injector Kit, Schrick Camshaft, 034 Big MAF Chip, Nology Hot wires, Bag-o-snake headers, and Exhaust Manifold. I was wondering in what order you guys would go about this if on an extended schedule and any other suggestions. Thanks

Last edited by Malebag; 02-16-2011 at 02:18 PM.
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post #2 of 3 (permalink) Old 02-16-2011, 10:49 PM
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Hey malebag...first off welcome to the forums...glad to have you aboard. Nice snag. Well as for tuning that beast of a 20v...I went all out with my 20v coupe. I'm running a cat-back 3" exhaust with a high flow magnaflow cat, JPG custom resonator and a magnaflow muffler. POwer gains are minimal but there. But I also spent another 4,000$ on the motor having it completely rebuilt from top to bottom using light weight chrome moly pistons,rings,rods and bearings. Had the crank shaft knife cut and balanced, put new 7a cams back in, had the intake fully port and polished aswell and the head. I built a custom 3.5 " cold air intake system that runs down to the middle of the front bumper for maximum cold air flow. I'm also using the 034 injector upgrade kit with an aeromotive adjustable fuel pressure regulator and 044 fuel pump for maximum fuel pressure...works very well. I to am using the stock bag o snakes headers. All in all it was alot of money but very well worth it. Now I wouldn't go as far as I did but that's up to you...lol. Goodluck and I hope that helps you with some ideas...cheers!


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post #3 of 3 (permalink) Old 02-20-2011, 07:22 PM
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If you have a place to do the work and know what your're doing the cheapest way to get that moving is to buy an 86-88 Audi 5000 with the MC 2.2L turbo. I bought a 5000 last week for $150 that was on it's way to the scrap yard for parts so you can buy those cars for next to nothing nowadays. there's a guy in Washington State (intended acceleration) that you can send the ECU from the 5000 to and and for $600 he re programs it and gives you a new westegate spring and you'll have 240HP out of that 2.2T. (U can also buy other parts for the 2.2T from them as well)

The flywheel and motor from the 2.2 turbo bolts right onto the 90 20V tranny. Once that is done there are many, many upgrades you can do. If you do the work yourself it would cost you $1000 top. That includes buying the 5000 and having the ECU and new wastegate.

If someone else will have to do the work this will not be a cheap endeavour. I met a guy fom North Vancouver by chance when his work truck broke down last summer and he had it towed to my shop in Pemberton who has been trying to do this conversion for a few years. His friend has been the one doing the work but he's not reliable and there is some major electrical changes to make everything work. I'm going to help him finish the conversion because this car means a lot to him.

If the body is good on your quattro then it is worth investing time and money because these cars are a great base to build from. The 20V 90's have a better suspension then the other 90's, almost a perfect 50/50 weight distribution and they are somewhat heavy but the handling of these is amazing!! The weight makes it great in the snow.

If you choose the engine swap to the turbo the most important thing to do is to buy the Audi factory manuals for the 84-88 5000S and 5000CS quattro's (both electrical and mechanical manuals) and the 88-92 80/90 and coupe quattro manual. there is a ton of re wiring but if you're good with electrical stuff then it will only be time consuming... 3 weekends and it should be running...

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