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Up for sale is my RJC HD rear motor brace that I never installed. I tried to but my non stock bell housing didn't fit the brace so I went with the HR poly mounts instead. Comes with the brace and installation instructions, I lost the nut that came with it but you can buy one from a hardware...

Selling my powerlogger, scanmaster 2.1, and SD2 chip (setup for gas and 60 lb injectors). I switched to the FAST XFI so I no longer need these. Everything works great and my car made 535 rwhp with this combo with alky injection at 28 lbs boost. I'll sell everything for $500 shipped. If I...

It took me a while to get my new engine built (the #5 bearing spun on the dyno due to the last shop that built the engine leaving part of a shop rag in the oil tank and it blocking the pickup tube) but my car is back on it's wheels again. Now I can continue learning to tune my SD2 chip. Its...

Product ID: Gn1Performance5970ConnectingRods Gn1Performance 5970 Connecting Rods Details This is a set of "Gn1Performance 5970 Connecting Rods" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. These are stock rod replacements that are custom built to fit your...

After taking my car to the dyno, I believe its time to step up to the SD2 so I can tune it better. I have read the installation instructions for the new chip and most of the work is already done minus the IAT relocate. My question is....how do I setup the new chip for alky? Ive searched but...

I bought the wrong Metco valve cover breathers...so my loss is your gain! These breathers have tabs on the bottoms which don't work with my aftermarket valve covers. Here is a description of them: 1986-1987 Buick V-6 Turbo (Grand National, T-Type, Turbo T) Angled Top For Level Filter This...

I've been dealing with an issue with my GN since I got it. I have added a lot of parts but nothing will stop my issue. I am including to different files from my powerloger, and after studying each one it seems that my car hits 4400 rpm and just shuts off. I can see the rpm line flatten out...

This is a really basic question...I bought my 87 GN last year and have done a lot of mods to it since then. I put a 6266 dbb precision turbo on it, alky control kit, 60 lb injectors, 6.1 TT alocohol chip, powerlogger, walbro 340 with hotwire, AEM wideband and am trying to figure out how to...

Hope this helps anybody else with this easy install. I jacked up the car on the frame in front of rear tires so the wheels were hanging in the air and with the airbags folded and out of air with caps on they slid easily into the open springs, take caps off and as they fill with air they fit...

3" aluminum MAF pipe with couplers and clamps $50 shipped Caspers electronics hotwire for pin M on ignition coils with relay and ground $50 shipped 1 gauge pod for drivers side pillar in grey $35 Prices are shipped to the lower 48, I will ship to Canada if you pay the difference in...

Hi, I just got done installing power logger on my ECM and haven't yet hooked up the boost on my 87 GN. I have a terrible miss at WOT, and it usually shuts the engine down if I floor it hard in boost. If I only go 3/4 into the throttle, it pulls hard and strong. I recorded a quick drive and...