Euro 535i LS Turbo Build Thread - 7/10/19 Dyno update

Discussion pertaining to positive pressure E28s.
T_C_D
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Joined: May 27, 2009 11:42 AM
Location: Twin Cities
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Re: Euro 535i LS Turbo Build Thread - 7/10/19 Dyno update

Post by T_C_D »

I have been really enjoying the car lately sorting through some issues fueling issues. Got that all fixed and decided to put it back on the dyno. Also wanted to find a turbo LS expert to help tune it. I was able to do that this week. In addition this dynojet was load bearing. Spent the first 45 minutes cleaning up my spark advance table off boost. I wasn't even close to optimized in some areas. That was a big learning experience. Unfortunately the two 35 year old plastic bushings in the throttle pedal bracket disintegrated during the second WOT pull and made the return unreliable so we stopped. Didn't even get a full 7000rpm pull in.

Just to recap, the engine made 503/485 in 2016 at same boost level. Boost averages a shade on 10psi. Max boost was 10.8psi. This is unchanged. Turbo was upgraded from a billet 67/65 1.15 exhaust housing to a billet 72/79 .96 exhaust housing. Car picked up 40rwhp and I think there is probably another 10-15rwhp in the tune.

Tires spun on the dyno on the 2nd run. Going to need to figure that out for next time.

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marc79euro645
Posts: 513
Joined: Dec 08, 2008 11:33 PM

Re: Euro 535i LS Turbo Build Thread - 7/10/19 Dyno update

Post by marc79euro645 »

WOW! I know your smilin when you drive it. Any idea what it weighs now?
enjoy
T_C_D
Posts: 7733
Joined: May 27, 2009 11:42 AM
Location: Twin Cities
Contact:

Re: Euro 535i LS Turbo Build Thread - 7/10/19 Dyno update

Post by T_C_D »

marc79euro645 wrote:WOW! I know your smilin when you drive it. Any idea what it weighs now?
enjoy
3283lbs in street trim, 1/2 tank gas
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