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07-30-2012, 07:42 AM | #1 |
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What Bolt On Mods Make Power!?!? E90 M3
Hi everybody, I have an E90 M3 and I'm looking to get a lil more power out of it excluding s/c and turbos bc that's obvious, my question is would cat less headers, cams,intake and a remapped ecu do the trick? Looking to get like 30-40HP(more would be nice also ) lol more out of it. I did a search and couldn't find anything specific sorry if I made a thread for no reason.. Thanks in advance
Last edited by kerkiraios00; 07-30-2012 at 07:47 AM.. |
07-30-2012, 07:47 AM | #2 | |
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07-30-2012, 07:50 AM | #3 |
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And I'm looking at about 40hp? Is that wheel or crank?
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07-30-2012, 08:17 AM | #4 |
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07-30-2012, 08:29 AM | #5 |
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07-30-2012, 12:05 PM | #6 |
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Tune, Full Exhaust (Test Pipes or X-Pipe + Rear Section), Intake, Pulleys
Cams (and/or aftermarket Headers) are expensive, require a lot of labor & don't give you gains that justify their cost |
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07-30-2012, 12:36 PM | #7 |
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07-30-2012, 12:37 PM | #8 |
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They are correct. A catless x-pipe will get you the best gains for the buck. Tuning it will get you additional gains and rid of that SES light.
Now I could also get an additional 40-50 hp by moving to the east coast down to sea level and running 93 OCT.
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07-30-2012, 01:07 PM | #9 |
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How is that meth kit along with the procede. Any issues? Would the longevity of the motor be compromised running meth? I'm trading my FBO+Meth 135 and since i'll have shiv's PWM kit laying around i figured why not try it on the M along with the tune. I was very happy with it on the N54, thing was a monster.
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07-30-2012, 01:16 PM | #10 |
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I suggest going with our drop in filter, cat-less xpipe and tune to start.
X-pipe alone is good for 20 whp. Here is a dyno with filter,pulley,tune and rear section only. (stock X-pipe) |
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07-30-2012, 01:41 PM | #11 |
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07-30-2012, 02:17 PM | #12 | |
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The only issues I had were during the beta testing when we were figuring out the differences in the N54 and S65 fault codes. The SES kept coming on even though we had what we thought were the right fault codes built in the Canclear function. Shiv made corrections and they are built in and working as advertised in the latest firmware (which firmware and map updates are always free by the way). Shiv also sent out upgraded, larger nozzles to us, also free. The older ones had a different spray pattern that was getting the filter soaked. The new nozzles work a lot better. I think the Procede uses a different harness for the M3's ECU.
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07-30-2012, 10:14 PM | #14 |
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What about this combo:
Dinan 3.62 LSD Dinan pulley Dinan intake MRF Velaforza exhaust MRF tune My calcs show this setup to be 489hp (crank) and 396 ft/lbs of torque for those mods. Anyone have any thoughts on these additions? |
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07-30-2012, 11:22 PM | #16 | |
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07-31-2012, 05:36 AM | #17 | |
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Obviously, of these, a catless x-pipe has less restriction than a high flow cat x-pipe or a primary cat delete x-pipe and most of the reported dynos show the catless pipes making more power. There do not seem to be many dynos showing gains from changing the rear exhaust. The intake is a subject of debate. There are claims for power gains, but the claims have been disputed. Certainly on an older car with charcoal filter, there will be gains, but much or all of those gains might be there just from changing to a high flow filter alone. I don't see 489 crank hp or 396 lbs torque being made from those mods. The 3.62 diff adds no engine torque. It just multiples what the engine makes. Its effect will not be reflected on an engine or chassis dyno (except perhaps as minimally greater drag on a chassis dyno). 489 crank hp would be over 400 rwhp. Search around and you will find the cars that cracked 400 rwhp SAE to be exceptionally rare. However, there are plenty of cars with the mods in your list making around 390 rwhp SAE and I don't think that works out to 489 crank hp using any realistic drivetrain loss multiplier. |
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07-31-2012, 06:56 AM | #18 |
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Thanks for all the input everyone I've gotten a lot of good info but still have to do some more research. All I have as of right now is a miesterschaft exhaust, I def wanna do the x pipe just not sure how crazy loud it will get. I dont understand why you would need meth without running any kind of forced induction system? (sorry ive had subarus all my life) lol That VF 620 s/c def looks sick thought, I wonder if there would be any issues with it after you install it like any future problems motor,tranny or diff?
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07-31-2012, 12:30 PM | #19 |
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These engines run very high compression and seem to be octane sensitive. The meth gives you the equivalent of higher octane than any normal pump gas. This allows higher ignition timing than you can run on pump gas, and more timing makes more power. I bought the Vishnu procede piggyback with meth injection for this reason. I think it will outperform any tune running 91 or 93 octane pump gas.
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07-31-2012, 01:18 PM | #20 | |
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07-31-2012, 02:56 PM | #21 | |
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To see the "quickie" install, go to the Vishnu website and review the pictorial. I will post my thoughts after it is in and I have driven it a bit. Hopefully that will be within a couple of weeks. I'd like to install it this weekend. |
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07-31-2012, 03:48 PM | #22 | |
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