Get more power out of S&B intake

PSYKOSTEVO · Aug 2, 2008

For those guys who bought the S&B intake, here is a modification that adds 7rwhp in addition to the gains from the intake. I have tried this on 2 different GTs and both picked up 7rwhp.

What you need to do is take off the S&B airfilter, and install a Spectre Airfilter from a local parts store. Now, don't get ahead of yourself because if you don't tune it, then your car will start up and shut off. The reason being is that the Spectre Filter flows ~35% more air than the S&B filter.

The good news is that I have tackled the MAF table for you, and this is what you will need to put in there:

0.00000
0.50743
0.60130
0.77696
0.88478
1.16927
1.43591
1.70833
1.97167
2.53547
2.81512
3.36932
4.41328
4.94562
5.97247
7.22954
8.59593
9.54357
11.70632
13.81242
14.97995
16.69337
19.55212
22.40099
25.15091
27.37075
32.92843
38.03984
46.12551
55.19342

The power gains are noticable from ~2,750 rpms and up. It will be well worth the $27 for the filter after tax.

Adios Compadres

NastyStang113 · Aug 2, 2008

Any links to this filter? Do you have any how it filters compared to the S&B?

lexluthr69 · Aug 3, 2008

So put a Spectre filter on the end of the JLT CAI and you get 7hp more with the corrected MAF info? While I'm not questioning you, I've always thought of Spectre air filters the same way I've always thought of Fram oil filters... at the bottom of the barrel. If there quality of filtering is better than I thought, than maybe it'd be worth a try.

walter · Aug 3, 2008

perhaps it flows better because it doesn't filter so well. I wonder if anyone tried an AEM dryflow filter those worked great and without oil.

PSYKOSTEVO · Aug 3, 2008

ThumperMX113 said:
Any links to this filter? Do you have any how it filters compared to the S&B?

not sure on the micron filtration. the reason it flows more air is that there in no MAF restrictive "plate" in the filter.

Posted via Mobile Device

PSYKOSTEVO · Aug 3, 2008

lexluthr69 said:
So put a Spectre filter on the end of the JLT CAI and you get 7hp more with the corrected MAF info? While I'm not questioning you, I've always thought of Spectre air filters the same way I've always thought of Fram oil filters... at the bottom of the barrel. If there quality of filtering is better than I thought, than maybe it'd be worth a try.

the JLT doesn't have a MAF restricted filter does it? doesn't it already need a tune?

and for the record the 7rwhp is NOT because of a tune, it is strictly from the filter and MAF calibration. NO OTHER CHANGES were made.

Posted via Mobile Device

lexluthr69 · Aug 4, 2008

The JLT CAI uses a S&B filter, so I assumed it would run into the same issues as the actual S&B intake. Is that a wrong assumption?

PSYKOSTEVO · Aug 4, 2008

lexluthr69 said:
The JLT CAI uses a S&B filter, so I assumed it would run into the same issues as the actual S&B intake. Is that a wrong assumption?

It might be a wrong assumption. I don't know what the filter looks like that comes with the JLT intake in particular. The filter that comes with the S&B intake has a donut type thing inside that restricts a good portion of the airway so that you don't have to have your MAF retuned as it is.

Take your filter off and look. The restrictor would be obvious.

lexluthr69 · Aug 4, 2008

Ok, I understand what you're saying now. At first read (and second as well, I guess), I thought that the air filter alone was what was improving the performance, when in fact it's the actual lack of the restrictor that is improving it. Only reason I jumped in on this thread was because I thought maybe the S&B air filter was not as high flowing as I previous thought, and the JLT comes with a S&B filter.

So, the bottom line is that you can gain HP by replacing the filter with restrictor in it, with one that doesn't have it.

Good deal.

PSYKOSTEVO · Aug 4, 2008

Exactly! It will save the S&B owners a few bucks if they were thinking that they had to buy a whole new intake if they wanted something a little better.

And hey 7rwhp is not joke. That's worth every penny. For most people they will need to pay for a new tune from their tuner in addition to the cost of the filter. But still a cheaper option than buying a whole new intake AND a tune anyhow.

01YellowGT · Aug 6, 2008

I have a S&B with a brenspeed 93 perf tune. Would i need another tune if i replaced the filter?

ranger04 · Aug 6, 2008

I tend to worry when messing with filters that flow that well. As with K&N, they flow extremely well. However in independant testing, K&N does a crappy job of filtering. The whole purpose of a filter is to feed clean air into the engine. A couple more hp isn;t worth long term engine damage. I'm not saying spectra doesn't filter well, just wish there was some data on it. I also like the new AEM dryflow filters, they have good flow and yet filter well and best of all, they don't require oil. Ford mafs hate oil as we all know. I wonder how your experiment would work using other filters like the dryflow, K&N, aimsoil and so on. There maybe a happy medium, where we have a filter that flows well and yet filters well. Like I say, I'm not saying the spectra doesn't filter well, like others, I've allways considered them a junky filter, but maybe not. I just know our engines aren't cheap to replace on an experiment that has gone wrong. Some data on the spectra may ease some concerns.

PSYKOSTEVO · Aug 6, 2008

01YellowGT said:
I have a S&B with a brenspeed 93 perf tune. Would i need another tune if i replaced the filter?

Yes, you would need to have brenspeed write the above MAF numbers into your tune. That should be the only changes they will need to make.

PSYKOSTEVO · Aug 6, 2008

ranger04 said:
I tend to worry when messing with filters that flow that well. As with K&N, they flow extremely well. However in independant testing, K&N does a crappy job of filtering. The whole purpose of a filter is to feed clean air into the engine. A couple more hp isn;t worth long term engine damage. I'm not saying spectra doesn't filter well, just wish there was some data on it. I also like the new AEM dryflow filters, they have good flow and yet filter well and best of all, they don't require oil. Ford mafs hate oil as we all know. I wonder how your experiment would work using other filters like the dryflow, K&N, aimsoil and so on. There maybe a happy medium, where we have a filter that flows well and yet filters well. Like I say, I'm not saying the spectra doesn't filter well, like others, I've allways considered them a junky filter, but maybe not. I just know our engines aren't cheap to replace on an experiment that has gone wrong. Some data on the spectra may ease some concerns.

You didn't read this thread very well.

The reason the other filter is better is that the S&B filter has a restrictor physically inside of the filter that keeps the MAF sensor the same diameter. The new filter does not have that, and that is why it flows better. Use whatever brand filter you want, as long as it doesn't have a plate inside of it blocking the airflow.

ranger04 · Aug 7, 2008

I read it just fine, were not refering to the resticter, I'm refering to how well does the spctra filter the air. You missing the whole point, which is some filters do a better job of filtering than do others. At the same time some filters flow better than others. The point being, using a good filter with decent flow and still filter out the dirt, unlike K&N. I use to use K&N all the time untill it was brought to my attention on another forum that K&N ranks torward the bottom in independant testing on how well they actually filter the incomming air. He had gotten better flow with the spectra which had no restriction, but was wondering how well spectra filters. Increased flow isn't worth it at the expense of poor filtering, nothing to do with the restriction plate, but how good a filter is.

Get more power out of S&B intake

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