Today was the first day for the NG900 Project car on the dyno. I added a APC valve and a basic stg4 tune for the 15t5cm last week. I have never been a fan of the MBC. Overshoot in 2nd and not enough in second, well till it cooled off.. Suddenly with some reasonable boost management by gear we have 1 bar in 1st, 1.4 in second and 1.5 in the rest the racelogic wasn’t so important to have. This car has the 6cm 9k hot side. I know 18t right 
Just wanted to get some runs on a basic tune so it is more fun on the road while I sort the chassis. Turned into a little more than that. Here is the HD Video from today. Read the rest of this entry »
Ng900 Project car “Red” hits the dyno
New sport rear mount for NG900/9-3
Friday, Mar 5th, 2010 by NickT | 1 Comment
Filed under: (Dark) Viggen, CNC / R&D Parts, NG900 Project Car, Powertrain
Filed under: (Dark) Viggen, CNC / R&D Parts, NG900 Project Car, Powertrain
With a few of these out in the wild and more headed that way, time for a place to keep all the info together.
I have one in my new -94 900 Project car. Along with just sport trans mount, tdo4 etc. Feels great. Little more vibration if I bog it off idle but thats about all. Makes the shifter solid! Here is a video playing on the way to work. You tube HD video link That was driving it quite hard and the shifter stays put.
The black viggen has one too. Looking forward to his input.
Also the original prototype is still in the 2.3i beater car. I love the way that car responds. Post Link
Show to the right is just some of the testing we did for the new mounts. You can even see the dead stock one that we blewup. All variants were tested including a Diesel. It was important that we keep the loaded heights the same while limiting travel.
New blended Header flanges for the B2×4 and B2×5 Motors
With the last batch of header spacers we also ran some 3d ported flanges for manifold construction. Designed for 1-1/4 sch10 pipe. They are opened up to the gasket size so it would be wise to port the head a little. Should have them for sale on a custom basis if anybody needs one. Should be nicer than smashing the tubes to match the ports.
9-3SS Ignition Misfire when tuned
Identifying the 4cyl Coils to fix the misfire on stg3 up. THis is like a dead hole on full throttle.
If running the Plug gap a little closed down helps then you need new coils. (Close would be .8mm)
When we turned up the 2.0T above stg1 we run into this and decided it would be helpful to the rest out there to identify the old coils.
The early white coils seem to misfire above stg1 on the B207R (210hp)
The plug cover comes off with the screwdriver in the trunk. 30torx. You need a 10mm socket to pull the coils and a 5/8″ sparkplug socket.
Cam Gears
Been working with Steve to get the cam gears finished along with everything else. Started the project nearly 5 years ago. Found a supplier that could machine us custom gears of 4140 alloy steel. Best part is that they are heat treated to the same spec as factory gears for lifetime durability. Added a 27mm hex to the nose making it easier to torque the cam bolt and adjust the timing. Production parts and setup video to follow. Still a couple weeks out on the sprockets. Here is an early model. Not final but you get the idea. Hopefully there is enough interest to keep the price down.
Updates
Black Viggen Is on the dyno. Just starting to open it up. Video On Youtube VigDark Dyno
NG900 Project car; We are still fighting the clutch. But not spending much time on it. Trying to get the rest of the projects done.
New rear motor mount prototype parts were picked up from the waterjet contractor. Still waiting on fasteners so those should be welded up early next week. The raw parts looked neat so heres a pic. Also some new round pointy things coming out of R&D they have 38 teeth and 4140 alloy steel is the material. 
New Project Car Arrives…
DIRTY! More updates as the plan is formulated. We have to swap the clutch as a first step to get it going. After that with some fresh 94 octane gas we can baseline dyno it and go from there. Should have some parts for sale that will help support the drag car this year. 
Mounts and Steering
Putting some miles on the 2.3i car to test both the new steering mods and the prototype rear mount. Shown here is an early version.. just dirty to test the design. We are at r4 or r5 now and real close to production. That we have reached this point on the 2.3 with no balance shafts and a harder than production trans mount is nice. Now I need a few people willing to beta test them once we get some more made up. You will have to report back to me. Also you must be willing to swap the mount possibly more than once. At least a stg3 car with my trans mount too. Leave a message in the comments or email me: nick at this site. This mount is not aimed at the Full race but more your everyday sportscar needing more than the stock rear mount. But not as far as our full race mount that would be too rough for a daily driver.
The steering modifications are quite ok on the street. We might need to put just a touch more toe in it like stock or replace the bushings with poly. Certainly doing this to my Viggen next. Maybe not so aggressive of a change but it makes the car feel quite unlike any NG900/9-3 I have driven. I was thinking with the rest of the mods it should make quite a package. -N
Tuning…
Not sure many out there fully understand what is involved in proper tuning.. Not just the “turn maps up” kind and a quick run on a dyno to get some numbers. If you are lucky they monitored A/F and thats about it.. EGT? nope, Most dynos don’t have enough fan to get near cooling a NA car much less simulating the airflow needed to cool a turbo car. Inertia only you can’t simulate rear world acceleration rates. Did they actually find ideal timing and A/F ratios for this setup? Real tuning takes lots of time on the dyno to get the best for the customer.. The hourly cost of at least $60/hr for a dyno is cheap. We have invested over $50k in the dyno cell alone. My belief here is that by spending for unlimited time upfront we can not be rushed to make the clock. Then it is not the best to “try” on customer cars. So the Business has to invest in development vehicles. Then these cars go to the racetrack and street for long term testing. It is easy to see those that are actually developing and those that are simply copy/paste… Unfortunately just like the china parts usually the copy is pretty good. Looks the same to the short sighted customer. Is it right? Sure shows on the racetrack though. Over the years I have witnessed all sorts of tuners on the dyno. Just like anything lots of different methods with varying degrees of success.
I recently found this set of articles that takes lots of education and condenses it down to what the everyday driver can understand. Articles From Bilsport/Rototest I encourage everyone to read this that is going to tune their Saab. Maybe you will look a little deeper into the “Development” involved.
If you need a little more then Society Of Automotive Engineers (SAE) Has a good seminar. Lots cheaper now too! Was interesting to see the mathematical side of the motor after learning mostly by the A>B>A testing methods..
Comments? NickT
Customer Viggen (Dark)
Well we are almost finished on this project. Rather take a little longer that put out the junk that comes from… Anyway, plan was to make it cleaner than mine! I know right Had it out making noise today. Still missing some parts (Strut brace in custom texture black) and needs that blue plastic removed but you get the idea. More pics on the image link.
My FlipVideo died so only old camera VIDEO. Thats the exhaust in race mode with the straight pipe on the back. 1min vband swap to quiet. More videos once we get some miles on the motor and turn it up mapping it on the dyno.