PROMO VTT E9X N55 Twin Turbo conversion 500-750WHP capable. Starting Under $4000
- Thread starter Tony@VargasTurboTech
- Start date
These upgrades that will ONLY work with the GC's. Our original goal was to allow any N54 turbochargers to be used including stock turbos etc. But the space constraints did not allow that. You have to be able to reclock the turbos for everything to fit. This means the turbos have to be on V-bands like the GC's are, other wise its a no go
Ah that makes sense. Thank you for the quick reply.
Do you have any dyno comparison between the GC lite n55 dyno vs an n54? I figure its an apple to oranges comparison, but I would be curious to see if there is any obvious differences.
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You can always review their N54 dynos. N55 should make the same, if not more, power with the same setup.
Problem with big twins is that the torque down low tends to break things
Yeah for sure I've been holding out for better options than PS2. I'd like to steer away from having to drive a turbo outside of its efficiency range to hold power up top. I would also really like to stay DI only to make that 550whp.
Was this a DCT car dyno'd? Same sprocket as the S55 DCT hub that BMW has used since 2001?
This car is a manual. I ordered a new hub, its a different part number than the N54, and S55.
Man this is totally awesome, you did it. Finally something for the N55ers!!
Tony, did Ken say anything about those timing corrections around 2k to 3k?
Nice job with the swap. I love the idea.
Ken didn't do any tuning on the car directly. He sent me a starter map that he was running on his car, and I did all the tweaking on it, well before the hub spun. Wasn't really concerned with the corrections. 100,000 mile motor, could be any number of things. Power was there, and was smooth, DME was doing its job pulling timing if it was hearing knock.
For anyone who was wondering, I can confirm the crank bolt backed out, and let the valves say hello to the pistons. The got into a bit of a scuffle. The pistons won. We will replacing the head, hub assembly, and putting a Crank bolt capture on it. They seem to use the same one as the S55.
Damn man, sorry to hear about the failure. Have you been seeing more and more of these crank hub issues?
Its getting extremely prevalent. Its why we are investing in a complete solution to offer up so people including us do not have to deal with this anymore.
Looks great! Making big power on these N55's. Can wait to see how far people will push these things
Yeah its a real bummer, mostly for the customer who thought his car was almost finished. We have been seeing more, and more of them yes.
Will the Double Barrel HPFP option work on an N55 or only the Single Barrel (due to DME placement)?
I'm really curious about the crank hubs. I have several N55s from 500whp to almost 800whp and none have hub issues.
Thanks, but I was more so asking/wondering how or what is causing these issues for you. Since I haven't had these issues on the multiples of high powered N55 I have.
So you feel it's definitely the crank bolt loosening up?
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