crazy_199

hey guys,

thanks for your feedback and comments, all great.

@AseanAero - PM me and il give you the contact details in aus of some of the best guys i know who carry some of the most weird and wonderfull s38 stuff you can find locally,

@crowdaddy and Bondy - correct the extra ponies are definitely making me crazly lol. I just orders a set of brand new 3.8 ring brakes from bm de front and rear. Those floating rotors are just so damn sexy, IMHO looking way ahead of there time and look about a million times better than brembo. So extra ponies = crazy, damn straight, lol. In all honesty getting the totally wrong answers from ppl why claim to have done things is just so frustrating, but oh well. thats life.

@DiegoR - If your making 320rwhp with chip and cats on 3.8, if wonder what will happen if you delete airpump and ac? My car is euro 3.6, no cats, no air pump or a/c, running like **** and its making 289 rwhp. I wonder what will happen once i do correct tune and proper exhaust. We will see. Of course more dyno runs will follow and this thread will be updated with true results. Im guessing will be somewhere close to your power which wont be bad for 3.6, fingers crossed.

@Sub8 - Your a legend mate. That's for the advice, i'll check it all our and update how i went on it. What your saying definitely makes sense andg should be tested as you advised. Very much appreciated. (i even have a new TPS sitting around which was never fitted)

@Alan Archer - Alan, lets give DiegoR the benefit of the doubt. He does have a chip and no cats however a dyno graph would be nice If i were you and i owned a 3.8 making 272 rwhp in great condition and i saw a post like this on a 3.6, no cats or air pump making 291, well, you know what i would be doing. Go for it mate, its a no brainer.

@Tomba - You not being convinced certainly does confuse me, but does not suprise me either. Incase you missed it, let me state the facts again.

- Standard 3.6, with factory cats and factory everything. Dyno Graph above = 249 rwhp
- change cats to 100 flow = 2 rwhp gain
- remove cats + air pump gear and ac comp = ~ 40rwhp gain.
- Dyno SAME - Temp, atmostphere, colour of sky, maybe even day of the week ? = Same Each time.

Your Comment "I know that when you unbelt the smog pump (and A/C if present) the engine runs better but 40bhp at the wheels?"

- If you think removing the air pump restriction is simple a matter of removing the belt, i suggest you should take another look at the air pump system and all the gear that surrounds it and how it works. It should be pretty obvious to you.

Im sorry the above facts, dont convince you, as far as im concerned the results could not possibly be more obvious hence i went to the trouble of going the extra length.

@inertia8 - i know what your saying re cats however please dont forget, standard cats = 249rwhp, changed to high flow brand new cats gained a dismal 2 rwhp. Dumpbed cats, air pump and ac = ~ 40 rwhp gain. Mate, the dyno does not lie. Nothing else changed and the care didnt do 500km of driving between all 3. AND its still running like **** (AFR wise)

@davidoli - hmm, damn. Does it go close ? what do you get ?


All in all guys, i cant wait to

- get the supersprint front cat delete muffler and center exhaust section
- and mate it with the eisenmann real race 83 mm. That should really be exciting and sound like something special. I could be wrong, but i have never seen this done before. The esienmann is made to fit factory center, however i supersprint center is made ONLY for supersprint rear muffler, so might be a little work joining, but cant be too hard. Does anybody know if it has been done ?

(i'll dyno again at that point)

- then i'll do both cams, injectors, maybe port TB to 50mm (more like probably
- WILL definitely NOT touch intake manifold or airbox, apparently they are perfect ?

---- The only thing im really stuck with is, the Tune. Im really stuck in 2 minds.

On one hand i dont want aftermarket computer, however obviously with all above it needs proper tune to make everything work the way it should (especially cams). So do i go aftermarket computer and tune OR have someone really good tune factory edu. Does anybody know or have experience with anyone who can help?

If anyone can chime in on there experience would be greatly appreciated. I plan on seing this through the whole way, with dyno results every single time and hopefully can help others achieve same results which so far, ~40 rwhp for $80 and few hours work aint bad at all. im very happy.

DiegoR

No, my car came with out CAT (or catless) from factory and NO 02 sensor since my car was ordered with a special option for leaded fuel. It dynoed about 295 HP at the wheels and with the chip it jumped to 320. Here is a thread if you would like to check it out.

CLICK HERE

__________________
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crazy_199

well Diego, i have no tune at all yet. With 3.8 and Chip your 30 rwhp more.

What do you predict for me? If i get close to you with 3.6 i think it will be quiet surprising for many,.

DiegoR

I can't predict anything for you because I'm not expert in this field, but it will be amzing if you can get your 3.6 to this power figure or very close to my power achieved. Let us know!

Just try to no go Haltech or something like that unless you know another engine like that running susch systema dn a exclellent, truly master tunning it if not you will regret. I had Haltech in my e30 turbo, it's s olid system but there is allways some issues/hesistation,s etc etc.

crazy_199

I agree with you totally but i dont know what the alternative options are of if the factiry system can be tuned and if so, to what level. You got any ideas.

p.s. my thinking is with the exhaust and corrent tune, additional 30 rwhp should be easily achieved, but who knows.

DiegoR

Dunno if the WAR chip is available for the S38B36 (you already have MAF there) or maybe go with any eprom tuner that know this engine. perhaps MarkD?

Dan Kelly

I've had all the EGR pipework blanked off at the manifolds. I still have the AC in place and the standard cats. When the car was put on the dyno there was no significant increase in output. I'm at a loss to see where your 40whp has come from.

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'94 E36 325 coupe
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Sub8

The 40whp has come from the drop in engine inertia.

Its due to how that type of dyno calculates wheel power.

On a `proper` engine dyno, deleting the air pump and AC would save maybe 2-4hp due to belt losees.

In car, you would notice deleting these parts most in 1st gear, slightly less in 2nd gear and so on....

Its the same effect you feel when fitting a lighter flywheel.

93FIM5

Exactly, well said.

crazy_199

@Dan Kelly - Mate, maybe its your cats, like i said to me i dont see how the dyno can lie in this kind of example. I would do your cats with a test pipe and measure.

@Sub8 - Your comment sounds like an educated remark about that. However can you please explain to all who do not understand your therory on engine inertia? I for one have no idea what you consider a "proper dyno" or how this dyno can have a 40rwhp difference? To me what your saying makes no logical sense as it would mean the exact same dyno is basically rubbish and totally inaccurate right ? Then again im certainly no expert, im simple a person of fact and what i can see.

So please explain in more details what you mean.

In addition please explain what is a "proper dyno" and i will go immediately and have a power run done on this "proper dyno" and post the result to this immediately.

It will be great for all to get some real life results.

Cant wait to hear from you Sub8