Our company Overkill Engineering Motorsports is working to get a kit together for the sr20 crowd that will include the following kits:

1. 2.5" cat back mandrel exhaust with Magnaflow muffler/tip and all hardware(in aluminized or ss) + 3" CAI build by OverkillEngineeringMotorsports.com


2. 2.5" cat back mandrel exhaust without muffler or mounting hardware (in aluminized or ss) + 3" CAI build by OverkillEngineeringMotorsports.com

3. 3" cat back mandrel exhaust with Magnaflow muffler/tip and all hardware(in aluminized or ss) + 3" CAI build by OverkillEngineeringMotorsports.com


4. 3" cat back mandrel exhaust without muffler or mounting hardware (in aluminized or ss) + 3" CAI build by OverkillEngineeringMotorsports.com


These will be sold as package deals. All intakes will include all hardware for a bolt on application and come in polished aluminum with maf adapter vacuum inlets and filter. Powdercoating and filter upgrades are available at additional costs.


I am having a system made this week to test for fitment and sound. Pictures will come shortly.

We will need at least 10 to start production.

Just add your name below...

Name-----------Kit #----Additional notes
1. bluebomber 1 18" Magnaflow resonator blk powder intake

Why not sell your intake/CAI separately? Some folks like myself already have a mandrel bent, Magnaflow equipped SS cat-back 2.5" exhaust, HFC, 2.5" DP...

You eliminate anyone in my situation as a potential buyer right away, at least for now as my stuff is in near new condition but I'm less thrilled with my current intake.

Or am I reading this wrong?

I already have a mandrel 2.5" exhaust, but would be interested in a cold air intake depending on price. I have been hunting for a Place Racing or Hotshot for quite some time now. Since they are both out of production, and the Fujita deal fell through, you should have interest in a good quality CAI if you can keep it around $200.

That sounds great!
How about those interested in a 3" CAI? I can build them in sets of 10 for $160. This will include polished 3" mandrel bent tubing, all mounting hardware, filter, silicone couplers, hose clamps, and vacuum nipples. I am taking suggestions on an ideal setup ... or I will clone the AEM cold air that is on my 98 ser now due to the fact they dont offer anymore of these. I just want to make sure I get everyone's input on the project. Maybe you have a better MAF location? I will however be offering it with a mounting bracket, something my AEM doesnt offer and makes it kinda saggy.

Tell me what you like and well have a sample made up by mid next week.
I would like like a volunteer to test the system other than myself to give honest feedback. This will be a free CAI! Preferably someone with a dyno. As mentioned before the CAI built for the ZX2 http://www.teamzx2.com/showthread.php?t=2425 crowd put down 9hp to the wheels with MAF location optimization. Since we are new to the SR20 field we are taking suggestions.

The website is still under construction but check it out www.overkillengineeringmotorsports.com

We are focused on the forums, making parts that no one else offers at reasonable prices on group buys. Our kits right now include big brake upgrades, solid strut mounts, intakes, exhaust, retrofit hit kits and much more ...

Feedback on an ideal setup, IDK that I'm a good one to provide it, but I do have a very close by local tuner with excellent equipment, who is probably sitting around half the time right now due to the season turning over to snow/ice/crap.

Let me check with him, I've been meaning to get a new baseline dyno done anyway and this would give me an incentive to get off my ass and get it done :D If he has availability, I can volunteer to check it out on my B13 if you like.

If I can't help you there, I'd still be interested in a GB, like your ideas for construction and as always want to support the people doing the good work locally instead of the knock-off crap we're flooded with from elsewhere.:biggthump

Would the piping be the same routing on the B13 as the 14? I believe the hole int he fender is in the same location. Do you have any pics of your bay?
If you have access to a dyno I would like a before and after to get some numbers.

Anyone else have any feedback on MAF location or piping optimization, obviously as straight as possible with as little curves, but other than that??

You can mostly see my current setup here except I replaced the first filter with a larger K&N and a JWT ring, and have a DIY bracket that bolts to body below the GC plate, rubber washers to allow it to move a bit. I have better pics at home. Because of how the original motor was tuned for the C2 cams, I am thinking the custom intake was done with optimizing higher end power in mind, and the MAF looks to be farther out from the TB than stock:

http://homepage.mac.com/stracy01/.Pictures/B13/SE-Reng.jpg

I removed the partition, replaced the filter with a JWT venturi ring and larger K&N filter like my '95 Altima uses, also note the bracket used there, it's solid:

http://homepage.mac.com/stracy01/.Pictures/Altyintake/AltyEngIntake04.JPG

The bracket bolts to the outside of the MAF using slightly longer bolts, and to the car using some unused threaded holes in the body:

http://homepage.mac.com/stracy01/.Pictures/Altyintake/AltyEngIntake09.JPG

That setup is ok for the KA24DE in that car, but the intake is very much a WAI and not what I think I'd prefer to have on my SR20. Both cars' intakes are pretty similar right now. I am pretty sure moving the intake much further toward where the battery used to be or true CAI like the AEM-style would be better for me.

Catch up with some better pics later!

Let me take a trip to the yard this week to figure out if the plumbing will be the same, if so Ill put together a kit and send it out. Ill get with you later for an address.
If you could try and find out if you can get on that dyno.
I know on the ZX2 we moved the mounting location of the MAF closer to the stock location to optimize performance. Well see...

Any picks of a stock b13 and b14 bay with out an intake? I dont eel like searching for an hour ...

Would the piping be the same routing on the B13 as the 14? I believe the hole int he fender is in the same location. Do you have any pics of your bay?
If you have access to a dyno I would like a before and after to get some numbers.

Anyone else have any feedback on MAF location or piping optimization, obviously as straight as possible with as little curves, but other than that??

Lol, read my mind crossing posts. Local tuner has excellent dyno equipment, he has the 2000/3000 series Dynapack chassis dynamometers. I'll give him a call and see how busy he is over the next week or two, the holiday will cut a few days out of next week I'm sure.

1) IDK on the fender hole location but guessing yes, IIRC, someone would have to confirm that. I can take a better pic and post it up from my B13.

2) Only thing with before and after numbers is I don't have a stock airbox so before would be with the WAI in place, which is the dyno I was planning to do anyway, and after of course would be with the CAI. If you want a true stock to CAI comparison, I could check around and see who has a stock airbox sitting on the shelf, but I think those numbers would be crap, my ECU is a JWT tuned for higher airflow. I could put it back exactly as it was, no popcharger, just as the pic shows it, that's trivially easy to do and might provide a better comparison baseline.

3) IIRC the MAF location on mine was done to a) move it outbound a little, and b) avoid making any bends, it is about as far out to the fender w/o making a bend. Because the JWT ring bolts right onto the MAF, you cannot easily use it and have a true CAI, I'm thinking pull the ring off, run a longer CAI out to the fender, I should see better results than what I run today.

I'll get a better closeup of the B13's fender hole in relation to say the TB area, and I can take measurements, etc.

Yeah I would prefer a baseline run on a "stock" motor to get the comparison for the average guy. I am sure the 3" CAI Ill build will put down better numbers but I just want to make sure I am not going to build something that will loose power for people. If it does we can try a WAI to the fender hole. Ill take some measurements on Sunday and get back with you to compare.
What I would realy like it someone with a b13 and b14 to measure and compare to see if they are the same, if they are that would be great but if not no problem, Ill just offer two styles.
Also are you running a 3" or 2.5"? (factory, Ill measure mine) MAF. I will have to make sure when people order that they specify so they get the righ tMAF adapter.
Thanks for the help, hope the free CAI is worth the work Ill have you do.

Let me take a trip to the yard this week to figure out if the plumbing will be the same, if so Ill put together a kit and send it out. Ill get with you later for an address.
If you could try and find out if you can get on that dyno.
I know on the ZX2 we moved the mounting location of the MAF closer to the stock location to optimize performance. Well see...

Like I said, I'm not a good candidate to comment on the MAF location, I just don't know the SR20's volumetric efficiency/flow optimization characteristics that well :D

Just got off the phone, I can get time Tuesday 11/25, which is pretty tight on time to get things together, or the following Monday, 12/1. He's closed up Wed-Sunday next week as I suspected but otherwise things are slow and I'm sure I can get time Monday 12/1 or later in the same week, no problem. So no problem getting dyno time.

One thing to remember when creating intakes is that we have 2 different throttle body positions. 91-93 B13's came with highport motors which put the tb lower on the backside of the motor. Here is a pic of a highport out of the engine bay. You can see the runners curving up and away from the motor and down to the plenum/tb.
http://www.sr20forum.com/gallery/data/500/old_NX_motor.jpg
SuperblackZ's car has a highport motor.

94+ have the lowport which places the tb up higher. The runners start lower and curve up to the plenum/tb. You can clearly see the tb at the top of this lowport motor in Ameen's B14: http://www.sr20forum.com/gallery/data/500/Cusco_Bar_B14.jpg

I am also pretty sure that everyone who has a VE swap would want the lowport version of the intake.

Yeah I would prefer a baseline run on a "stock" motor to get the comparison for the average guy. I am sure the 3" CAI Ill build will put down better numbers but I just want to make sure I am not going to build something that will loose power for people. If it does we can try a WAI to the fender hole. Ill take some measurements on Sunday and get back with you to compare.

Great, I can do that, I'd just need to find someone with a stock air box, that won't be hard. The motor is pretty much stock other than the header, which anyone looking at a CAI or WAI is going to replace OEM mani with either SSAC-style like mine, or Hotshot (smaller primaries, 2.25" DP and out of business). It's going to be pretty representative for a base SR20DE with I/H/E.

What I would realy like it someone with a b13 and b14 to measure and compare to see if they are the same, if they are that would be great but if not no problem, Ill just offer two styles.

Yep, that's ideal, I can only do half that set of measurements...

Also are you running a 3" or 2.5"? (factory, Ill measure mine) MAF. I will have to make sure when people order that they specify so they get the righ tMAF adapter.

I am pretty sure it's 2.5", I'll have to measure.

Thanks for the help, hope the free CAI is worth the work Ill have you do.

Glad to be of help, and honestly as much as I appreciate a free CAI, I'm more than happy to help support people like yourself who will make quality products that more of us can afford to buy. Half the reason I bought my car was to give it a good home post-SCC Project car life, and continue to improve it where possible, it deserves that much being a 10-year running project car. The other half is it is just so damn fun to drive :D

Just lmk if you agree Tuesday is too soon given logistics, I am in CT, and I'll call back the shop and lock in time week of 12/1.

Now I have to look around, or put out the strangest post - "WTB: Stock B13 Airbox" ;)

Yes, I have a transplanted P10 JDM highport, same config as original. VE would def want lowport, which means IIRC almost all B14's w/o any swap, and anyone with a VE swap.

Interesting Ameen has spaced the MAF to almost about the same location as mine (other than lowport/highport), and might I add, that's a damn nice looking engine bay. "Pretty" wasn't in DC's vocab when it came to mods, "Functional" replaced it ;) Compare our FSTB's if you doubt it, lol!

I've got a stock airbox you can have. When everything comes together at the end and these are produced maybe I can get a "helper's" discount. :rofl: If you don't have access to one local, let me know and I'll get this one shipped to you asap.

...I am also pretty sure that everyone who has a VE swap would want the lowport version of the intake.

Also are there differences in the plumbing tube to the IAV, etc.? Looking at my friend's VE, the plumbing off the intake in general looked pretty much the same, but that is a VE.

I've got better pics of the whole intake plumbing in general at home.

Close up of my intake to TB area, and yes, I do have to run an EGR to pass CT emissions which are almost as strict as CA.
http://homepage.mac.com/stracy01/.Pictures/B13_SSH2/SSAC_Header_8304.jpg

what about a cold air intake for a 93' Primera P10?
Also... would you be able to construct and intake manifold for a highport sr20?
if you can make that you would make alot of money.

and yes, I do have to run an EGR to pass CT emissions which are almost as strict as CA.

Same here in the metro Atlanta area of Georgia

How many variations are we looking at. Its my understanding that the low port and high port have different throttle body positions but is there a difference in ve and de? I am thinking that the low port will be the same as the high port but with a taller section going into the fender to raise up the tb mounting location.

As far as the intake manifold, contact Mark @overkillengineering. Com to discuss. We can start another thread to discuss as well. As you can imaging we are swamped with requests, we are trying to do a few at time.