Performance upgrades??

Hey guys, Just sold my clk55 amg & e46 m3, have just purchased a 3.4 c2 coupe, Previous owner has already upgraded to on engineering ims bearing, new rms So far all it's pretty stock apart from Bmc filter & pse exhaust, What are the best bang for $$ to increase performance? ipd plenum? (Bit expensive) might try Pedro's techno instead, 200 cell cats? Fvd throttle body? Ecu tune? I'm not expecting huge gains, if anyone with any experience with these mod could give some advice would be much appreciated. Thanks

Save for a supercharger or sell and buy a turbo. This is the wrong platform to extract more power.

It won't give you more power but I installed a sprintbooster and it makes the car feel much more fun to drive. Well worth the money.

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I second this. I have all the bolt ons and going to dyno this summer. I'm not expecting much. If I had to choose probably 200 cell cats followed by ecu, maybe pulley too. Anything more will be minimal from that point forward IMO.

best bang for the buck.... nowadays, I rely on suspension and twisty roads, that's how I can keep up with the turbo dudes. Its all talent at this point.

cut some weight!

Realistically without going FI, the 200 Cell cats, Intake and Headers are what's going to get you any noticeable performance increases. The newly designed Fabspeed intake has been dyno tested and proven over the last year to achieve pretty significant HP #'s! I've attached the Dyno for both the intake and the Sportcat X-pipe separately

oh boy here we go again! to say that the N.A. platform is wrong for improving(performance,h.p. etc.) is ridiculous ,is it limited compared to a turbo,of course,adding turbo or supercharging to a n.a. car,requires plenty of cash alot of labor and in my opinion not worth it. the proper upgrades like high quality 200 cell cats ,headers,mufflers,plenum,ecu upgrade,pulley,airbox , will improve performance no question.its about being realistic in what your going to gain,and of course the argument will always exist about the cost in relation to performance...in the end its all fun...good luck

I already have gt3 suspension, like I said I'm not expecting huge gains, I have just ordered 200cel cat & intake (more for sound ) Is it worth doing the throttle & plenum? Btw I also own a modified 930 turbo as my weekend toy

200 cell cats are the biggest bang for the buck for these cars, so good choice. General consensus is that the plenum and enlarged throttle body are a fantastic way to spend a ****-ton of money for no noticeable gains (strangely enough, the only dyno plots to ever show improvement are those used by the manufacturers of said items...).

Since your 996 N/A has IMS/RMS issues addressed, sell it quick and get yourself a turbo, never driven one, but heard it drives pretty quick.

Supercharger, or Turbo Kit = > DONE! I think it goes for every car. With those kits you will get a new intake and new shiny exhaust but with serious HP gains.

The cheapest way to get into the boosted world is N2O. Nitrous Oxide is a form of chemical boosting.

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With the 200-cell cats, is there a tangible, dyno-proven difference torque-wise between the x-pipe and the "standard" design 200-cell cats? From what I understand, the sound can be a bit louder with the former but does the x-pipe design actually offer more grunt?

If you are going to this hi-flo setup... you need a tune as well to maximize the performance. Hence the reasoning for FI as best bang for the buck... those bolt ons add up quick.

Hi, I have done some mods (200 cpi kats + sport mufflers + IPD) + dynos. Check my post at https://rennlist.com/forums/996-foru...dyno-pics.html CS.

did you ever dyno before the IPD upgrade? with just cats ? great gains now wheres the nitrous

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No. On 1st dyno car was stock. Did the upgrades. On 2nd dyno already had all the mods done. So I can't say that I got x hp from the IPD and x hp from exhaust system.

If I I could afford a turbo I would, but would have to sell my 930 turbo, The 996 is my daily drive. Who is the best for ecu tuning?

Cheap HP increase? Doesn't exist. I installed the Fabspeed Performance Package (headers, 200cel cats, X-pipe, yada, yada, yada). I had planned to dyno it before and after the install, but that didn't work out. So, I have to rely on the dyno figures provided by Fabspeed. Depends what you mean by "bang for the $$". It wasn't cheap by any means, but worth it to me. Side benefit: Put the car on a hoist and you can use it as a shaving mirror. .

I LOVE my 996 with an EvoMS V-flow intake and Fister style mufflers. Doesn't feel a damn bit faster but it's worth every penny for the sound. If you want power from your modifications, sell the NA and buy a turbo.

125HP wet shot of nitrous is all you need. Bottle in the frunk, run the lines to the intake. Total cost $500. 996 NA C2 with 125 shot will take stock 996 turbo. I need to get a video of my car running on the bottle. 0-100MPH takes under 10 seconds.

Did you really do that mod, Kalishnakov? I guess I missed your posts regarding that. Only $500... hmmm..... maybe I need to do that too. Did you do a self-install? If so, was it easy?

http://www.ebay.com/itm/03-04-05-06-...a539cf&vxp=mtr I had the version of kit on my Acura for a long time. I installed it on the p-car as the experiment to see how car would behave. Seeing that people put turbo kits on 996 that raise the HP 100+, I figured I may as well try it. I had the 75/100/125/150 jets for the kit. It was un-tuned on the Acura, never blew it. On P-car install was similar to every other car, except backwards. Routing the lines from the bottle and tapping the fuel line and fitting it all takes time and was not pretty, but functional. I did not do the tune, on the assumption that if on almost equally powerful motor of similar size nothing blew, Porsche motor would not melt. I regret not recording the test runs. I was rather scared that instead of great triumph, it would end in massive failure. 125 jet was the most I had ***** to run. With 125 shot car felt like a AMG V8, I activated the shot at 3k RPM WOT...a lot of torque, a lot of noise, and great acceleration. DISCLAIMER: DO NOT ATTEMPT THIS MODIFICATION ON YOUR CAR, I AM NOT RESPONSIBLE IF YOU **** UP AND BLOW UP YOUR MOTOR. IF YOU ATTEMPT THIS ON YOUR CAR, THIS WILL MOST LIKELY HAPPEN. EDUCATE YOURSELF ON NITROUS KITS FIRST, AND HAVE PROFESSIONAL INSTALL A KIT IF YOU ARE A NEWBIE TO THE SUBJECT OF N20. NEW POSTERS, TAKE GREAT CARE AND UNDERSTAND HOW TO PROPERLY USE THE N20 SYSTEM AND UNDER WHICH CONDITION YOU SHOULD ACTIVATE THE SHOT. USE N20 ON YOUR CAR AT YOUR OWN RISK. You Tube

125 shot, yesss ! start a new thread with pics and vid

Just an update: Installed the schnell intake, made no difference in performance only sound, After reading many post on here & 6 speed, pulled the trigger on the ipd plenum, was very skeptical but now I'm a believer, my car is night & day difference, especially the mid range torque!! Next step is the exhaust & Ecu tune, I already have sport mufflers, Any suggestions? Cat bypass or sports 200cell cats? Mine is an early 3.4 cable throttle so do not have the down stream o2 sensors Are headers a waste from what I have read??

Yes you do have a downstream O2 sensor.

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That depends on if you have emissions where you're at and wanna play by the books, you're an environmentalist, you want a more subdued sound, you wanna keep the powerband more lower, etc. Don't expect to shoot flames with the cats though, lol. As for headers, I've never seen an independent dyno test with just that but have seen some when paired with other bolt ons. If you're gonna go most of the way, I don't see "reputable" headers being a waste personally. My $.02

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Regarding the tune, you may want to check with your local shops as they will do the install/config. I have the Revo tune and FVD X-Pipe 200 Cat's (and FVD headers & cans). I would not recommend the Cat bypass (way too loud from my perspective).

I agree with the people who say to buy a turbo or cut weight. The engine in a n/a 911 is not a race engine that was built to withstand 600 HP and just detuned. Anytime you boost the gas and or air going in an engine, you cut into the lifespan of the internal parts. Engines are built to run a certain horsepower and boosting beyond that makes them wear out faster. Adding headers and better exhaust is a lot less stress than adding a supercharger. But you are still letting the engine breath better and operate at higher RPMs and torque. And that wears it out quicker. For all of the thousands you can spend on sports exhausts or super chargers, you could just get rid of the heavy automatic seats and replace them with sport seats, get rid of the spare tire and tools, and replace the rims with some specialized light weight ones and probably get more of a performance upgrade. As the great founder of Lotus Colin Chapman once said, having more horsepower makes you faster on the straights, being lighter makes you faster everywhere.

Nice thread. I vote for the straighforward mods to intake and exhaust north of the MAF and south of the cats I went with Fabspeed on my 2000 MY. But my favorite mod has been a single mass flywheel, installed with a motorsports type clutch when I updated to ceramic IMS. Drivability is great, and the rate at which the engine changes speed is amazing - like being in a lower gear throughout the rev range. i know some worry about longevity with this setup. I have run it for 10K without a problem so far. But combined with a clutch job, this is an under $2K mod with prteey nice return.