997 tt/rs

Hi guys, I wonder if there is a difference? Thanks K

C4Spolar

The ECU is different, more options in 97/98 like power kits and so on. I think in 95 was ODI and OBII 96 and later.

ginch

I didn't think there was a 1995 Turbo! Started in 1996 no?

C4Spolar

Porsche 993 turbo's 1995 are mentioned on the Porsche website, I never seen one. Maybe for the European/Asian market.

Bill Verburg

All 993tt are Motronic 5.4, right from day 1. These are all OBD2 compliant 88 pins systems

All 94/95 n/a and all RoW 993 n/a are Motronic 2.1. These are OBD1 complaint 55 pin systems

all US '96up n/ a 993 are Motronic 5.4

C4Spolar

Hi Bill.

Why in my 993tt workshop manuals there is 2 electrical "engine, fuel, ignition" diagrams? M2.10 and M5.2

Bill Verburg

The manuals cover all the bases n/a and turbo

I mistyped, it's M5.2

an easy check is to count the # of O sensors on the exhaust
1 is M2.1 or earlier
4 is M5.1 or later

The DME itself comes in multiple versions w/ the big difference '96 is a one year only dual non flushable chip design and '97/98 a single flushable chip design

C4Spolar

Yes the manual cover all bases but the electrical schematics mention 993 turbo M2.1 and those 2 additional 993 turbo manuals are specific to turbo's.Also I have the 993 turbo OBD trouble shooting manual and it mention the M2.1 for turbo's. Weird and confusing.

Like I said before I never seen a 95 993 turbo but there was some 95 993 turbo made with special wishes for the Middle East and asian market. Porsche website mention only 14 turbo cabs produced in 1995.

Bill Verburg

i still have the Porsche Technical Training course materials for 964 and 993 , vol P21 'Fuel and inanition Systems' clearly states all 993 tt are M5.2

I've heard of the 14 turbo cabs from "95 but if so they were likely some sort of Sunder Wunsch or pre-production version

997 tt/rs

95 is European 993 turbo.
Just got info from famous porsche tuner poston rings are different.
how about difference in drive train?

C4Spolar

What is "poston rings"????

Drivetrain are the same in all years.

997 tt/rs

Sorry piston rings

TakeFour

Piston rings are all the same for turbos, 993 103 925 52

Basal Skull

Also : ‘97 has Light above ignition, stronger transmission input shaft, switch in clutch pedal so you have to depress the pedal when starting.

997 tt/rs

95 had poston rings produced by different manufacturer.