Re: 86 Porsche 944T LS1 swap begins

smkn951 Wed Nov 25, 2020 1:14 pm

Hotrodz of Dallas wrote:Looks like your tuner went super conservative on tuning the engine. It should have made well over 350hp at the wheels with your combo. But, with that said, it will be very reliable and not break parts. And 300hp is still a lot of power in a 944.

Awesome looking car. Great job on your build.

Thats what i was thinking with the bolt ons, at least 350, but 300 is good and he did advise me of the driveability of it and i leaned towards that. I am just so happy that its running. i can at least enjoy it and go to cars and coffee or small car meets and show it.
currently it's the only porsche 944turbo/ ls1 swap herein el paso, which makes it quite unique and a good conversation piece.

soon I'll be working on the AC and enjoy it too in the summer.

Hotrodz of Dallas Wed Nov 25, 2020 1:20 pm

The same basic engine with a Lingenfelter cam and LS1 intake made 400whp in one of my 944 builds. It also had the longtube Kooks headers and full 3" exhaust. Was a pretty aggressive tune we did. But still safe and very drivable.

smkn951 Sun Nov 29, 2020 10:38 am

well, i am thinking of a retune and push it a bit. just thinking of how it would affect the driveabilty of it. i mean i would like to use it frequently.
has anyone had any issues with theirs?
thanks

Hotrodz of Dallas Mon Nov 30, 2020 1:40 pm

Every one of these I have built are street driven. Some daily. No driving issues at all.

sharkey Mon Nov 30, 2020 10:21 pm

smkn951 wrote:well, i am thinking of a retune and push it a bit. just thinking of how it would affect the driveabilty of it. i mean i would like to use it frequently.
has anyone had any issues with theirs?
thanks

efi is not like a carb and distributor, where setting the car up aggressively may create some driveability problems. with efi you have individual control over entire maps, you dont need to compromise driveability and idle characteristics to make optimal power with your engine combo. yes, if you do something mechanical like a massive cam you may not be able to make that drive and idle nicely.

honestly it sounds like a lazy tuner, just not wanting to work to get the tune optimised.

smkn951 Tue Dec 01, 2020 9:34 am

sharkey wrote:
smkn951 wrote:well, i am thinking of a retune and push it a bit. just thinking of how it would affect the driveabilty of it. i mean i would like to use it frequently.
has anyone had any issues with theirs?
thanks

efi is not like a carb and distributor, where setting the car up aggressively may create some driveability problems. with efi you have individual control over entire maps, you dont need to compromise driveability and idle characteristics to make optimal power with your engine combo. yes, if you do something mechanical like a massive cam you may not be able to make that drive and idle nicely.

honestly it sounds like a lazy tuner, just not wanting to work to get the tune optimised.

Thanks, Sharkey,
I suspect the same with the tuner not optimizing my setup. I'll make the calls and see if they will fix my idle issue and extract more power, without charging again.

Leva Fri Dec 04, 2020 7:13 am

I suggest investing in HP Tuners. The cost of the program/hardware basically equals one tunning session with a "pro". Most are lazy as hell and just set you up with a MAF only tune and send you out the door. You can learn how to dial in MAF yourself in an afternoon off a YouTube video.

MAF is fine for power, but to get good driveability, fuel ecconomy etc you need to tune VE tables as well. That takes time and bit of driving/data logging. Only once you get your fuelling sorted (MAF/VE or speed density) can you tune idle, PE, timing etc properly.

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