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Forced Induction Forum Sponsored by Active Autowerke
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Old 08-03-2010, 08:23 PM   #41
firefirefire90
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this. is. AWESOME!
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Old 08-03-2010, 08:31 PM   #42
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Awesome, I am so ready to sort out my MAF issue and from the sounds of it if i am going to run one once i am standalone I might as well get one now.
This is the MAF i've been highly thinking about getting.
http://www.abacoperformance.com/products.htm
It pretty much takes care of fueling, in or out of boost so I am not sure what the standalone will actually be doing besides timing etc... or if it even makes since to have something so advance parallel to the standalone.
It's either that or don't run one at all.

Also, that's what I am missing with my current setup where I can just stab at the throttle and get the response I need.

Anyway, I applaud you for your efforts and waiting for the final output.
Thanks,
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Quote:
Originally Posted by gurov View Post
the maf is definitely not causing any drivability issues. it was just there in the way. later down the road i may go back to the maf once the blending code is developed more, maf for below boost and map for above boost. MAF will have a lot better time measuring the entering amounts of air for calculating fueling. whether i go back to this stock maf or some other unit still remains unknown.

maf was simply a slight restriction in the intake piping.

for now the car will be on MAP fueling (well, % baro for elevation correction, but that's a whole different topic). as far as drivability, that will take a bit long to dial in perfectly where you could stab the throttle at any speed and have it respond flawlessly, but as far as driving long distances, it shouldn't be a problem.
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Old 08-03-2010, 08:42 PM   #43
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great show ! glad i tuned in. when you say you have dumped the maf, is it now in alpha-n mode or speed density mode ? i understand megasquirt can do these.
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Old 08-03-2010, 09:12 PM   #44
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Quote:
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great show ! glad i tuned in. when you say you have dumped the maf, is it now in alpha-n mode or speed density mode ? i understand megasquirt can do these.
speed density, but it's set to percent baro, so atmospheric is always 100 ""kpa"", which now becomes "fuel load".
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Old 08-03-2010, 09:16 PM   #45
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Hey

very awesome project! Glad to see it going.. wanted to ask why it wasn't possible to use the bmw coil's with mega squirt? Does the megasquirt put out a +12v signal, and the bmw coils are expecting the signal wire to be grounded, such that you'd need to build a signal inverter so to fire them? Is the stock ecu doing the tach, and vanos and nil else?

Nice indeed - btw where did you source that exhaust manifold? I've been looking for something to mount a small garette turbo I have , that manifold would be perfect!
i was simply too lazy to troubleshoot the bugs from firing the bmw coils. they're just normal dumb coils without an igniter, so it's totally doable to run them with megasquirt and people have done it. I took the easy way out and did LS1 coils, cause i've done several cars with them, hence i know how they work and they're easy to work with.

stock ecu is driving tach, speedo, and whatever else is still connected to it. vanos is unplugged. once i get more bugs worked out of this, i'll call upon the seattle circuit fellow to provide me a with a dual vanos controller to see what that will get me.

the manifold is ebay. i do not like it. i just ordered a turbocharging dynamics manifold today along with a t4 to t3 cast iron adapter.

the problem with my manifold, or i suppose with my choice of parts is the fact that i'm using a very much hacked together wastegate, where i even had to drill the exhaust housing of the turbo for the hole, apparently that wasn't big enough, so now there's boost creep and it's overboosting.

i've got a proper tial gate laying around, and with the turbocharging dynamics manifold (which will hopefully fit, we'll see) i'll be able to use the external gate and control the boost properly without hitting self-imposed boost cut.
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Old 08-03-2010, 09:24 PM   #46
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here's a very slow acceleration with blowoff at the end, not sure what gear that was, and it was def not full throttle:
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Old 08-03-2010, 09:26 PM   #47
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Quote:
Originally Posted by gurov View Post
i was simply too lazy to troubleshoot the bugs from firing the bmw coils. they're just normal dumb coils without an igniter, so it's totally doable to run them with megasquirt and people have done it. I took the easy way out and did LS1 coils, cause i've done several cars with them, hence i know how they work and they're easy to work with.

stock ecu is driving tach, speedo, and whatever else is still connected to it. vanos is unplugged. once i get more bugs worked out of this, i'll call upon the seattle circuit fellow to provide me a with a dual vanos controller to see what that will get me.

the manifold is ebay. i do not like it. i just ordered a turbocharging dynamics manifold today along with a t4 to t3 cast iron adapter.

the problem with my manifold, or i suppose with my choice of parts is the fact that i'm using a very much hacked together wastegate, where i even had to drill the exhaust housing of the turbo for the hole, apparently that wasn't big enough, so now there's boost creep and it's overboosting.

i've got a proper tial gate laying around, and with the turbocharging dynamics manifold (which will hopefully fit, we'll see) i'll be able to use the external gate and control the boost properly without hitting self-imposed boost cut.
Awesome! I've been following your build on bimmerforums. Glad to see you're running a MegaSquirt. I love them, best bang for the buck.

Good luck!
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Old 08-03-2010, 09:42 PM   #48
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finally some pictures of it. went out today to get some groceries.



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Old 08-05-2010, 06:26 PM   #49
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Quote:
Originally Posted by gurov View Post
i was simply too lazy to troubleshoot the bugs from firing the bmw coils. they're just normal dumb coils without an igniter, so it's totally doable to run them with megasquirt and people have done it. I took the easy way out and did LS1 coils, cause i've done several cars with them, hence i know how they work and they're easy to work with.

stock ecu is driving tach, speedo, and whatever else is still connected to it. vanos is unplugged. once i get more bugs worked out of this, i'll call upon the seattle circuit fellow to provide me a with a dual vanos controller to see what that will get me.

the manifold is ebay. i do not like it. i just ordered a turbocharging dynamics manifold today along with a t4 to t3 cast iron adapter.

the problem with my manifold, or i suppose with my choice of parts is the fact that i'm using a very much hacked together wastegate, where i even had to drill the exhaust housing of the turbo for the hole, apparently that wasn't big enough, so now there's boost creep and it's overboosting.

i've got a proper tial gate laying around, and with the turbocharging dynamics manifold (which will hopefully fit, we'll see) i'll be able to use the external gate and control the boost properly without hitting self-imposed boost cut.

Hey

thanks for the reply & keeping us posted. I'd looked for ebay manifolds but only found the E36 variety, of which i am not certain they bolt up to the newer engines. In either case lots of work to get this going, still thinking of how to do this in my head.

Thanks

Jonathan
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Old 08-05-2010, 08:19 PM   #50
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Hey

thanks for the reply & keeping us posted. I'd looked for ebay manifolds but only found the E36 variety, of which i am not certain they bolt up to the newer engines. In either case lots of work to get this going, still thinking of how to do this in my head.

Thanks

Jonathan
More than likely, they'll work.
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Old 08-05-2010, 08:40 PM   #51
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look on here for ebay headers search for that and you will find everything you need to know and who to buy the headers from do this or you may get the wrong headers.
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Old 08-05-2010, 09:49 PM   #52
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yea, the manifold I'm getting from tcd is actually an s52/m52 variety, I'm pretty sure it will work, hopefully the wastegate clears the wheelwells. as I realizedm the engines are mounted at diffefent slant angles, so I might have to modify my engine mount once again.
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Old 08-06-2010, 09:19 PM   #53
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Congrats on the project. Its nice to see someone on the forum that actually knows what they are doing. I have been telling people for years that you could do this and alot cheaper then what they think it would cost. If you know what your doing and you fab everything up yourself like the op I can guarantee this cost a good amount less then the supercharger kits out.
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Old 08-07-2010, 03:49 AM   #54
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Congrats on the project. Its nice to see someone on the forum that actually knows what they are doing. I have been telling people for years that you could do this and alot cheaper then what they think it would cost. If you know what your doing and you fab everything up yourself like the op I can guarantee this cost a good amount less then the supercharger kits out.
Individually, people need to decide what their time is worth. If you have lots of time, and want to save money, DIY makes sense. If you have very little spare time, kits make a lot of sense.

Then there are fanatics that like to spend lots of money and time, because they just like to do things "their way".....

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Old 08-07-2010, 01:37 PM   #55
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whoever wanted information on the headers check my sig.

On a seperate note one day I will have money for another car and i think my 323i may undergo a similar construction, but the biggest issue is having the tools to do the job.and the space to store a car for a while since this is definitly not a day project.
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Old 08-07-2010, 03:18 PM   #56
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Congrats on the project. Its nice to see someone on the forum that actually knows what they are doing. I have been telling people for years that you could do this and alot cheaper then what they think it would cost. If you know what your doing and you fab everything up yourself like the op I can guarantee this cost a good amount less then the supercharger kits out.
There was never an issue of being able to do it, it seems the major problem is having it tuned. The people who cracked the ECU want to monopolize tuning so they can sell their "kits" instead. If/When Shark edit comes, it's all over. You'll be seeing builds like this all over the place.
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Old 08-07-2010, 03:52 PM   #57
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the biggest issue is having the tools to do the job.and the space to store a car for a while since this is definitly not a day project.
1000 sq/ft for one car, and it wasn't enough for me. Car projects eat space.

Decided to build a 2nd garage at the house for this kind of thing. It's a balance between property setbacks, and how much my wife/neighbors will tolerate for size. (I live in an acreage area with covenance stipulations) My neighbors thought I was joking about buying the lot behind me to extend the garage onto it...30' X 150' isn't too big right?

Turbo projects can get expensive!!!!!!
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Old 08-07-2010, 04:30 PM   #58
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1000 sq/ft for one car, and it wasn't enough for me. Car projects eat space.

Decided to build a 2nd garage at the house for this kind of thing. It's a balance between property setbacks, and how much my wife/neighbors will tolerate for size. (I live in an acreage area with covenance stipulations) My neighbors thought I was joking about buying the lot behind me to extend the garage onto it...30' X 150' isn't too big right?

Turbo projects can get expensive!!!!!!
My dream a nice house with lots of land to build a big garage so i can have space to work on **** like this. I just need to make sure i get somewhere with no laws like that. fvck the neighbors I do what i want on my land
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Old 08-09-2010, 11:18 PM   #59
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very nice to see the car running! I can't wait to see videos of it tearing up the streets.
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Old 08-11-2010, 02:27 AM   #60
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tore back into the exhaust bits of the car today, it was overboosting on the internal gate i rigged up, so i bought a TCD manifold, and a t3 to t4 adapter. just for kicks i reversed the manifold, and it looks like if one gets a t3/t4 adapter with the right angle and the right height to get the compressor housing to clear, it would be possible to do a topmount setup, while keeping the AC lines undisturbed. tial gate mounts cleanly on the bottom of the manifold, just have to relocate the main pressure port on the gate to a different spot and plug the original. i'm not sure i'm going to go through with the topmount idea, but it's def possible. 2.5" pipe fits between the rear of the manifold and wheelwell/firewall heatshielding fairly well
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