Just kicking around an idea about adding a turbo to a 3.5L HO Chrysler V6 engine. Wouldn't be anything too crazy because the transmission wouldn't handle it. The problem with Chrysler is there is no way to get into the PCM to do a custom tune. I assume timing advance and fuel delivery would need to be modified to work with the turbo. Is there a way do accomplish this without going to a stand alone ECU? Maybe a piggyback controller or something?

 

Exactly what year / make / model is this?

And is there any particular reason you want to avoid a standalone ECU?

 

The engine/transmission is out of a 2003 Chrysler 300M, it's current home is in a 1988 Pontiac Fiero. I am running all of the Chrysler electronics ( PCM, BCM, SKIM, and instrument cluster). The main challenge with going to a stand alone ECU is that the stock PCM also contains the TCM. So if I got rid of the stock PCM and went stand alone ECU, I'm not sure how I'd control the transmission. the 42LE transaxle doesn't have a regular valve body, it's all electronic. Another problem would be speedometer because all of the gauges and modules communicate over a 1 wire PCI bus. I'm not against going stand alone, I just don't have any experience when it comes to tuning.

 

Not aware of anything that can tune the stock ECU either; there are a few piggybacks that could pull timing and alter fuel (but not add timing).

You could use a standalone here by disconnecting the stock ECU from the coils and injectors, and having the standalone run them. This article covers that approach:

http://www.diyautotune.com/tech_articles/installing_megasquirt_in_parallel.htm

 

Thanks for the link! I wasn't aware that could be done. Now I just need to figure out which version I'd need.

 

That's an odd combination in a fiero I'd imagine a LS motor not a Chrysler 3.5 v6

 

It's the only one in existence, I wanted to be different. I also wanted to do a longitudinal mounted engine with an automatic transaxle without having to stretch the chassis, which really limited my choices. Plus it looks cool.

 

Pics...or it didn't happen.....

 

Just snapped these today. If you would like to see the build: http://www.fiero.nl/forum/Forum3/HTML/000139.html


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cool.!

 

I almost did a ZZ 383 in one a few years back, but the customer's dreams were a fair bit bigger than his bank account. I thought it was a pretty good deal at $10.5K out the door, but he decided to do a "bolt-in" 3.4 instead.

 

Any suggestions for a turbo. Would need to stay on a budget so thinking something off of a production vehicle. I See Holset turbos from Cummings engines mentioned in other threads, are there other options? I've tried the Boost Adviser app from Garret's website but all they do is recommend their turbos but I don't have that much to spend.