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| Turbo my 3.4 pushrod (Page 2/3) |
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M.aaron80
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OCT 28, 01:17 PM
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What 2 bar map do you recommend using? One from maybe a turbo sunbird?
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Dennis LaGrua
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OCT 28, 03:18 PM
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| quote | Originally posted by M.aaron80:
What 2 bar map do you recommend using? One from maybe a turbo sunbird? |
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I used the GM two BAR Map that was used on the Buick Grand National. The turbo Sunbird may have used the same part.
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" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "
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lou_dias
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OCT 29, 11:09 AM
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Do you know if an aftermarket cam was used in the 3.4?
More overlap than stock is not a good thing for turbo installs. A true turbo cam has hardly any overlap.
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pmbrunelle
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OCT 29, 12:49 PM
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RotrexFiero
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NOV 02, 06:35 AM
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I ran a 3.4 Turbo...it was a great performer, but less drivable then the 3800 SC. Turbo kick in a Fiero can be wild, not in the straight line, but going around turns.
I won't sway you away, but it does require some good knowledge and persistence. You have all that here, but you'll need to be dedicated. If you doing it from scratch your Fiero will be down for a while. If its your second or play car that's okay.
For me, I could never get a good idle. The hardware fabrication and installation is one thing, but understanding software programming is another.
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pmbrunelle
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NOV 02, 07:48 AM
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| quote | Originally posted by RotrexFiero:
For me, I could never get a good idle. The hardware fabrication and installation is one thing, but understanding software programming is another. |
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OP should not have a mechanical limitation with regards to smooth idling, if it idles smoothly now.
People seem to run into limitations with the Fiero ECM.
OP may wish to install a computer that is known for easier tuning.
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lou_dias
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NOV 02, 09:22 AM
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If you want it to run good, you should to a '7730 ECM upgrade.
Going the route of the Fiero '85 ECM route is an option but there are lots of benefits to the '7730 such as switching to DIS and you can program it with the 1990/1991 turbo 3.1 code as a base for tuning.
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Slowbuild
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NOV 02, 04:11 PM
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Honest Don
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NOV 03, 06:02 PM
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Turbo 2.8 here. It’s no monster, but runs pretty good for what it is. The big thing is proper engine management and tuning.
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Honest Don
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NOV 03, 06:04 PM
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Holdener knows what’s up!
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