Cliff Ruckstuhl

I keep getting into the rev limiter and it is not very fun. I am pretty sure I need to adjust something on the throttle thingofabob were the boden cable is? Any ideas?

Cliff 87 S4 Murf # 44

ZEUS+

The LH controls the fuel cutoff at 6600 rpm.

Cliff Ruckstuhl

So what is happening is the fuel is getting cut off ?? How do I adjust the tranny cable to have the car shift sooner?

Cliff 87 S4 Murf # 44

ZEUS+

Check to make sure you have vacuum at the modulator. Does it shift properly when not getting on it ?

Cliff Ruckstuhl

Yes it shifts fine all the time, it is just when I stomp on it and run it to the Red line that is cuts out. I do have the vacume line disconected at the brake booster because of a problem inside the dash that has to do with the temp actuater. I looked around in the archive for this and did not fined anything, not sure what to use for searching. Where is the Vacume modulator for the shifting?

Cliff

ZEUS+

Connect the vacuum back to the modulator Did this start after you disconnected the line at booster ? When I suggested that in your other thread it was only to diagnose the noise. You should have disconnected one hose only and capped the supply fitting.

ZEUS+

What gear are you in when this happens ? It is normal on highway in second gear to hit fuel cut if you hold out to long.

Cliff Ruckstuhl

I am thinking it is happening in 2nd gear. When I am following someone doing 50 and stomp on it it drops to 2nd and as I am going around them I hit the fuel cut out. I must be holding on to long and I tried lifting off a little to let it shift and it shifted. I would think I would not need to let off that it should shift all on it's own. I also did a stomp from a stop light and got up to around 60 or so and needed to lift a little to stop from going into the red line and she shifted fine. Is all of this normal with hitting the fuel cut off?? Tomorrow I am going to dig into the dash and find the actuator and cap off the vacume line till I can get the new part ordered. I will then try again and see if I am getting into the fuel cut off.

Cliff 87 S4 Auto Murf # 44

ZEUS+

No need to dig in dash. Disconnect the black vacuum hose at splitter by booster and cap splitter. Find and fix leak inside car. If this happens automatically and not a manual downshift then there is a problem.

Cliff Ruckstuhl

I'll address the vacume line and see if there is a difference,

Thanks

Cliff

John Speake

At what rpm is it cutting out? If the problem is the LH rev limiter (6500rpm IIRC) then this can be easilly programmed to a higher value with a SharkTuner. If you are running a standard chip I can supply a new chip with whatever rpm limit you feel safe with.

Brett928S2

Hi John

I would KILL for you to be able to say the above for a 16 V LOL

16 V is 6375 revs for limiter for anyone who didnt know

All the best Brett

928S2 AUTO V8 4.7 LTR 1986 IRIS METALLIC BLUE WITH X-PIPES, RMB, PROMAX CHIPS, KICKDOWN SWITCH, K&N,WIZARDS OF NOS - NITROUS KIT 150 HP - 505 BHP / 500 FT LBS TORQUE.
PCGB - 928 - FORUM - MODERATOR.
EMAIL : managingdirector@pchealthcare.co.uk

John Speake

No need to kill Brett, I can do it for an LH2.2 Euro as well now :-)

Brett928S2

Hi John

WOOOOOOOOOOOOOOOOOOOOOOOOWWWWWWWWWWWWWW

You can ? Is it possible to have 6800 or 7000 and is it a one or 2 chip change ?

Also as I have "Promax" chips in mine can "they" have the rev limit raised to 6800 or 7000 if I sent them to you ?

Any idea on cost ???

All the best Brett

John Speake

7620 or 6900 or 7080 or 7280.......

This would be a modified standard S2 LH EPROM. I doubt you would notice ant change in peformance, the main gains come from the EZF chip.

Cost ? If you swap the chip yourself 50GBP