to SD or not to SD
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to SD or not to SD for my 408 custom cam, L92, L76 intake, 90mm tb, `1 7/8 header, svo 42 injector setup what would be best to use the Maf or go SD
see with a 90mm tb the inlet for air needs to be 4" and my K&N FIPK isnt that large and neither is the MAF should i eliminate the MAF and tune for SD for this new setup
see with a 90mm tb the inlet for air needs to be 4" and my K&N FIPK isnt that large and neither is the MAF should i eliminate the MAF and tune for SD for this new setup
Thats funny. You ask for help on LS1tech. Then someone ask you a question and you can`t give him any info!! Why is it such a secret? Where here to help everyone as best we can. I don`t hide anything about my setup! This site is family! We are all brothers here!
Last edited by beardWS6; Nov 24, 2006 at 08:52 AM.
Originally Posted by beardWS6
Thats funny. You ask for help on LS1tech. Then someone ask you a question and you can`t give him any info!! Why is it such a secret? Where here to help everyone as best we can. I don`t hide anything about my setup! This site is family! We are all brothers here!
Are you ******* serious? He has a custom cam that he probably paid somebody to grind for him. If the grinder doesn't want his cam specs out then he has to respect that, brother.For the poster, go SD and remove the maf from the intake track entirely. The maf is a restriction regardless of what others say.
Nate
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With a SD tune, do you constantly have to adjust it for the weather conditions? I thought with a MAF, it adjusts by itself accordingly. I'm sure a tune for summer weather is probably different for a tune in winter if using a SD tune. This is all an assumption, so I could be completely wrong. Fill me in please.
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So its 1 tune and you're done? You don't have to adjust it for weather? Down here in Texas, DA (density altitude) can range from well above into the positive range and deep in the negative range. The best weather I've ever raced in was -1900 ft. DA! I'm sure you were already aware that DA is calculated by temperature, barometric pressure, altitude, and dew point. None of this has an affect on the SD tune?
They way I understand it, our cars are already equip with speed density. If you unplug your maf, it should go into speed density mode. Speed density uses the engine RPM, IAT (intake air temperature) and MAP (manifold pressure) sensors to calculate the density of the air and control injector pulse.
When we get our cars tuned on speed density, It just uses those values instead of the MAF, so we can just get rid of it all together... pluss some fine tuning to the numbers aswell. It's really useful for tuning big cams and making them idle.
To answer your question would be yes, it's only one SD tune and you're done.
Someone correct me if i'm wrong?
When we get our cars tuned on speed density, It just uses those values instead of the MAF, so we can just get rid of it all together... pluss some fine tuning to the numbers aswell. It's really useful for tuning big cams and making them idle.
To answer your question would be yes, it's only one SD tune and you're done.
Someone correct me if i'm wrong?
Originally Posted by Nate_Taufer
Are you ******* serious? He has a custom cam that he probably paid somebody to grind for him. If the grinder doesn't want his cam specs out then he has to respect that, brother.
Cam specs really are the intellectual property of the grinder. People have been trying to get my cam specs - including QUIK - for weeks.
Originally Posted by WKMCD
Probably pirates software, music and videos also.
Cam specs really are the intellectual property of the grinder. People have been trying to get my cam specs - including QUIK - for weeks.
Cam specs really are the intellectual property of the grinder. People have been trying to get my cam specs - including QUIK - for weeks.
Cam pirates
Originally Posted by Nate_Taufer
Are you ******* serious? He has a custom cam that he probably paid somebody to grind for him. If the grinder doesn't want his cam specs out then he has to respect that, brother.Nate
That may be true but how many times over the years have you seen the following quote:
@ .050 specs aren't everything
I simply asked him if he'd care to share cam specs- you know - the @.050 specs that we all post up.... I sure as heck wasn't asking for specific valve events or a more detailed cam doctor sheet lol.
I personaly don't know enough about cams to say if @.050 specs are enough to duplicate a cam.... I was only curious in his cam specs because im doing the same motor...check my post and you'll see I have always been open regarding info on my setup(s)
I know your post wasn't aimed at me, and this isn't necessariy aimed at you either... I was just trying to play devil's advocate for a minute. If in fact he CAN'T share HIS cam specs because he was asked not to I can respect that, but if the gentleman WON'T share his specs- even though it's his perogitive not to- IMO is unfortunate for the rest of the LSx community that use this site for information purposes.
Originally Posted by WKMCD
Cam specs really are the intellectual property of the grinder. People have been trying to get my cam specs - including QUIK - for weeks.
It's pretty riciculous to not share what works and doesn't work.
Whats funny, he ask me if I was on crack! I like helping everyone I can. I hope its because his builder doesn`t want it out. If not, I agree with the fellas above. I think where all here to help and learn from one another. We are like family on this site. Thats just my thoughts. I made alot of friends from here and got lots of help with my build.
Peace!
Peace!
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From: Northern California
Originally Posted by beardWS6
Whats funny, he ask me if I was on crack! I like helping everyone I can. I hope its because his builder doesn`t want it out. If not, I agree with the fellas above. I think where all here to help and learn from one another. We are like family on this site. Thats just my thoughts. I made alot of friends from here and got lots of help with my build.
Peace!
Peace!
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Originally Posted by Nate_Taufer
For the poster, go SD and remove the maf from the intake track entirely. The maf is a restriction regardless of what others say.
Nate
No flames to Nate - I have complete respect for his knowledge.
But there may be another option.
LPE has a 100 mm MAF. Nick Williams will have his 100 mm TB available very soon (weeks?). Outside dia. of LPE MAF is 4.00"
MAF tune is nice if you drive alot on the street...cruising, not racing.
If you plan to drive on the street quite a bit then you might want to consider the big MAF.
Do a complete SD tune to get a solid VE table and then reconnect the MAF. With MAF reconnected rescale the MAF to bring your AFR back in line. You'll need a wideband O2 and a tuner setup (HPTuners or EFILive).
Just a thought..