Author Topic: Data logging & understanding the stock ecu. Evolution of the TBI Monster to Mpi  (Read 62399 times)

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FunkyPhil

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So nothin new?
87 Conquest Tsi: 519whp 519wtq 7.09@102--10.95@122
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So nothin new?
I had the snowmobile out today.  :)

The tbi monster is back in the garage after setting out in the rain for about 2 months. It leaks pretty bad.  :(

FunkyPhil

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haha, that sucks. winter sucks. Cant handle these 60F days....... ;D
87 Conquest Tsi: 519whp 519wtq 7.09@102--10.95@122
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Dyno day in two weeks. I think I am just going to run it in it's detuned street tune state and see what it does. (1050/2000 injectors on strait e85 and starquest turbine housing). That fuel set up can only support about 23 psi. I can of course lean it down and max out the injectors to run a little more boost on the dyno or track, but leaving it like that does not work on the street.

 I might try giving it a little more timing. And or a little more base pressure, but the pump can not support much more pressure.

Frankly I feel the car was quicker with the 18g compressor at this boost level.

 The waste gate porting I had done on the sq turbine housing did what I wanted it to do. Maybe a little to well, as in the heat of last summer the boost was a little slow to ramp up. I could maybe try some heavier  external springs on the waste gate actuator.

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For the 4-26-14 dyno day my goal was to see what the car could do at a streetable boost level with the current mods.

The primary difference from the 2013 dyno was going back to a 1050 primary vs 1200, the sq turbine housing vs the sy/ty 8cm t3, and strait E85 vs E85 spiked with race gas.

330 run was at 22 psi.  About the most I can run and still have control of the afr
350 run was at 24.5 psi.  Went a little rich from high injector duty cycle.
357 run was at 25.5 psi.  A boost spike from going wot at a lower rpm (2500) accounted for the higher tq on this run.

Current mods 4-21-14

 --Pistons--Wiseco 8-1

 --Turbo--Stock hot side bored for  Mitsu td06 turbine and wastegate ported. Kingawa surge ported compressor cover. KTS billet 20g 6+6 blade compressor. 3" exhaust, strait through bullet muffler.

 --Boost control--Internal gate. Electronic

 --Engine Management--2g 609 maf,  Apexi Neo afc, Versafuler peak and hold injector driver box, Delphi 1050  primary, fiveomotorsports 2000 secondary. Innovate data logger. Magnafuel regulator, 58 psi base. Wallbo 255 external pump power by 10gauge wire via a relay.

 --Camshaft--Tep HR70. Degreed. About 5* advanced.

 --Fuel Used--E85

 --Manifold-- Tbi. Lowershores 52mm tb and intake.

 --Head--M28. Si stock size ss valves, ported, Schneider springs, Ti locks and retainers.

 --Block--Knife edge crank and crank scraper.

 --Innercooler and piping--*DM 4" and 2.25 pipes. Home built ahp with maf baffel.

 --Ignition--Mallory 6al, Msd Hvc2 coil, Ngk 7031 plugs. Msd wires, Stock timing.


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Compared to my 18g dyno from 2012, I see little difference. The 20g did hold boost a little better at high rpm.

Compared to my 2013 20g t3 sy/ty 8 cm turbine housing dyno, the sq turbine housing seems to have moved the power band to the left about 200 rpm.  The logs from that dyno were lost in a computer crash, but I would say the sq turbine housing cost me about 15-20 hp

FunkyPhil

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You say it cost you 15-20HP peak? What about Powerband?looks it also died off sooner.Are you still on Schneider springs?
87 Conquest Tsi: 519whp 519wtq 7.09@102--10.95@122
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You say it cost you 15-20HP peak? What about Powerband?looks it also died off sooner.Are you still on Schneider springs?
Yes, not that I had fuel for more power though. But probably could have made the 350 on less boost with the t3

I figure the power came in about 200 rpm sooner and peaked about 200 rpm sooner.

Yes, schneider springs. They were new about 2 years ago.

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Here they are in the same post.

T3 8cm housing. I think the low power run was about 22-23 psi. Spring 2013



SQ turbine housing. Spring 2014


FunkyPhil

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did you log backpressure?
87 Conquest Tsi: 519whp 519wtq 7.09@102--10.95@122
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did you log backpressure?

Yes,  The quote below is from after the T3 dyno. The 23 psi run was probably the first, 349 hp pull.

 On the latest dyno, back pressure peaked at 69 psi on the 350 and 357 hp pull. And 58 on the 330 pull.


The sy/ty 8cm housing lowered turbine inlet pressure about 5 psi. Back pressure peaked at 62 on the 23 psi pull and 79 on the 29 psi pull.

FunkyPhil

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Have you ever considered putting that HR70 in the trash?  :D

A LOT of overlap. Especially for the turbine housings your using.
87 Conquest Tsi: 519whp 519wtq 7.09@102--10.95@122
CLICK TO SEE BUILD

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  • TBI Guy
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Have you ever considered putting that HR70 in the trash?  :D

A LOT of overlap. Especially for the turbine housings your using.
And try what next? A stock cam?

FunkyPhil

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are you hydro or mech? Do you have anything against Schneider cam?

The HR70 just doesnt seem at all like a good turbo cam. I would also never use 6610's on that setup
87 Conquest Tsi: 519whp 519wtq 7.09@102--10.95@122
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  • TBI Guy
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Mechanical. Do you have the specks on the hr 70?. I was under the impression it was about the same as the scnider 270 and 274 cams?