Speed Density, no MAF, what coupler?
Speed Density, no MAF, what coupler? Just got the car tuned speed density, gettin rid of the MAF, but I need a coupler to replace the stock stuff. The tuner was talking he heard a fernco coupler from home depot in a specific size works, but hadn't heard anything more about. For those of you SD guys, what did you do? Does anyone make a conversion kit?
Hrm, you streched out the stock one and it made it? I'll have to see if thats possible. I'm worried about going with the fernco because I've heard they can crack lids because they are so stiff, but maybe I heard wrong? I'm also looking for something to replace the stock crap with, because I would like some smooth bellows, but if its stretched out it would smooth it out a lot. Gotta wait for this crap weather to pass to do anything with it anyways 
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i am going with a 4" aluminum tube and then this 22* elbow...
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Verdad Gallardo Hrm, you streched out the stock one and it made it? I'll have to see if thats possible. I'm worried about going with the fernco because I've heard they can crack lids because they are so stiff, but maybe I heard wrong? I'm also looking for something to replace the stock crap with, because I would like some smooth bellows, but if its stretched out it would smooth it out a lot. Gotta wait for this crap weather to pass to do anything with it anyways
This is false, I dont think there is much delay with a MAF either..
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From: Bossier city,LA barksdale AFB
4"x6" http://intakehoses.com/Merchant2/mer...egory_Code=SC4
What i have. yes its on a stock TB but it is clamped down a lot. It better for bigger TB
What i have. yes its on a stock TB but it is clamped down a lot. It better for bigger TB
unless you can move your foot faster than 3 milliseconds, your not going to out run the MAF signal. im pretty sure the computer knows what your doing before you do.
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From: Bossier city,LA barksdale AFB
the only power gained is from going from the small maff hole to a open 4" pipe. Other then that its the same. I just like not having to worry about a maff or the troubles of having it tuned 
Ive been SD for 3+ years. Car was tuned in hawaii, then lived in missouri and -15 deg weather and now in florida and it is good everywhere
Ive been SD for 3+ years. Car was tuned in hawaii, then lived in missouri and -15 deg weather and now in florida and it is good everywhere 
4"x6" http://intakehoses.com/Merchant2/mer...egory_Code=SC4
What i have. yes its on a stock TB but it is clamped down a lot. It better for bigger TB
What i have. yes its on a stock TB but it is clamped down a lot. It better for bigger TB
So far this seems like the cheapest priced, good quality product
Wow, I forgot about this post because it was gettin kind of old. Awesome replies guys! Thanks for all the info, that last 4x6 looks pretty good. To someone who asked about the benefit, I definitely noticed better throttle response, as per hp gained I would say zero probably. However, the main benefit, as my tuner was talking about, is that when you stay with the MAF, about a year down the road your A/F could be almost a point off without changing anything and letting the MAF and the computer control the A/F. However by going SD, it's going to remain the same by taking the MAF out of the equation.
As per unlpugging it, I've already done that. I want to clean the engine bay up and get a large smooth bellows at the same time to remove the stock crap
As per unlpugging it, I've already done that. I want to clean the engine bay up and get a large smooth bellows at the same time to remove the stock crap
Why not go with the 3x6? http://intakehoses.com/Merchant2/mer...egory_Code=SC4 Did you go with the 4inch so you wouldn't have a problem stretching it over the tb? I think a 4in would be really large and require some major clamping down to seal it? Do you have a picture of that on your setup you can post? Thanks.
Ok, my tuner said that is what he saw on his car. I thought it was hard to believe, that's why I added "or something" at the end of my comment.
Is there any benefit? (I did a motor swap when I did mine. So I can't compare before and after.)
Since my comment is incorrect I will remove it. I don't want to spread false information.
Is there any benefit? (I did a motor swap when I did mine. So I can't compare before and after.)
Since my comment is incorrect I will remove it. I don't want to spread false information.
Last edited by Pseudonym; Feb 14, 2010 at 08:53 AM.
Ok, my tuner said that is what he saw on his car. I thought it was hard to believe, that's why I added "or something" at the end of my comment.
Is there any benefit? (I did a motor swap when I did mine. So I can't compare before and after.)
Since my comment is incorrect I will remove it. I don't want to spread false information
Is there any benefit? (I did a motor swap when I did mine. So I can't compare before and after.)
Since my comment is incorrect I will remove it. I don't want to spread false information
I know that when you go to a bigger cam, its wiser to tune it speed density because the overlap of the cam could throw readings off to the MAF, but sensors such as MAF and o2 sensors work very quickly.. Honestly, I cant recall why its better to use a speed density tune on stock-like or bolt on cars.. But I know due to cams having overlap its a better choice to run speed density vs MAF.. maybe MAf can be used to tune radical engines as well.. MAYBE, but right know I cant gather the information in my head to explain why or why not..
MAF and speed density are just 2 different types of engine management systems on cars.