Hey guys,

ive a problem. With a few mods equipped on my LS1 Camaro (99) the K&N replacement filter give me not enougth air i think.
So i take a look at this 450USD performance kit but it have an MAF wich i dont need. I allready have a good MAF.
Now im looking for the best way to change that in any other way.

Any ideas out there? Or have anyone installed the K&N performancekit? The MAF diameter (connector) would be interest and a picture from the top too.

Thanks!

EDIT: At the moment ive a direct air flow kit and grenatelli MAF. In the box a K&N replacement filter. I think the engine needs more air like from the performancekit but it comes with a MAF...

 

Maybe you could get the kit and sell the MAF that comes with it? If you have a good MAF already. The K&N kit looks like it includes a cone style filter so that would definitely increase the air flow.

 

Thanks for reply.

Ive read many threads here about K&N and its long time ago we talk about a 99 Camro Z28

Most people say: The K&N isnt the most producer of HP. People without any filters at a dyno get 3 rmhp more then with a K&N, other people tryd K&N vs. paper and get 1 or no rwhp more. No reason to burn 500 USD.

Maybe the focus must be changed from the filter to a bigger MAF. My grenatelli have 90mm in- and outlet and inside i think ~70mm. Ive a stock throttle body.

Whats the next focus? 80mm MAF or 90mm MAF? bigger throttle body or open K&N like that performance kit? Headers? Metallcats?

Ive allready an 3'' catback and now its to find the best options for the airflow. Whats good and whats not.

Any tipps are welcome

 

An SLP air box lid might help with your drop in filter, it is cheaper then the K&N kit. The idea of the cone style is more surface area for the filter. Not having a filter is bad for your engine.

Have you ever had to clean your filter? A big mistake people sometimes make is after cleaning it to drench the filter in the filter oil. This can decrease performance and even mess up the MAF. Just a coating of filter oil is sufficient. Also letting it dry is recommended.



If your emission laws permit, replacing the headers and y pipe with aftermarket can help give you more power. After you decide what you are going to do getting the computer programmed can greatly increase the usable power.

 

I have that SLP direct air flow kit and the K&N. I never oil it. I only wash and thats it. And let it dry..

How important is a bigger MAF or a bigger throttle body?

And the headers.. Yes i think about. A friend telld me Kooks ones but they dont reply till yet my emission questions. Here in germany we have strikt emission rules. Ive seen, that california have hight emission rules too. Maybe its the same. So it MUST fit at this point!

So at the moment its not safe to me to buy headers. Im verry interest on it but like ive sayd: The emission rules.

Ive allready a 3'' catback. My friend telld me 1 7/8 tubes till a 3 collector + 3'' cats + 3'' Y-Pipe and my 3'' system. But wich one will fit the emission law!?

 

I don't know availability of parts and kits in Germany but K&N makes what they call a "recharge kit". The cleaner cleans the filter better then just water and soap. It also includes the K&N oil to make the filter like new. It looks like this...



Usually a larger MAF and throttle body doesn't add much power by themselves.

There are headers called "shorties" that replace the stock manifolds. While they don't provide as much power as long tube headers they are better then stock manifolds. Most shorty header kits are compliant with all 50 states over here because they keep everything in the stock locations; as well as keeping all the emission equipment. I guess you would have to check to see if they are compliant enough to pass any inspections you might have to go through.

 

Yes if anyone woud tell me wich header are emission legal, thats the goul. Kooks answered not till today

 

Shorty headers:

http://www.edelbrock.com/automotive_...s_shorty.shtml
http://www.lmperformance.com/15956/1.html

 

Thats a good idea.

Now here its evening and the second day without answere from SLP or Kooks. I dont know wich long tube header and cats are emission legal :/

The point with the performancekit from K&N ive read at gmhighperformance that the combination of the short edelbrock headers + performancekit brings 22 rwhp. Sounds good so far and it emission legal.

 

Another thing that you can do is to get an SLP modified LS6 intake manifold. Along with the good shorty headers it could give you some decent hp gains and still be emissions legal.

 

Thanks for the tipp. Ive read, that the LS6 is the best one.

Comes with the LS6 intake a throttlebody or do i need a other one?
I think about to change the original Z28 to a 80mm one.

 

Use your stock one. You can search on line and fine instructions on how to port your stock one for a little more flow.