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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E30 (1982 - 1993)

E30 (1982 - 1993)
God's Chariot. The E30 was produced primarily from 1982 through 1991. The cabriolet was the one exception which was produced through 1993.

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  #1  
Old 05-11-2005, 06:48 PM
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Lightbulb How much HP???

I have an 89 325i.As we all now it has about 170hp stock.Where does it have that power?At the flywheel,or at the wheel?(whp?).Also to increase the power ,so far I put a perf.chip,and an intake in it.Soon to come remus catback and AC Schnitzer exhaust manifold.How much ponies should I expect then? Thank guys!
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  #2  
Old 05-12-2005, 05:59 AM
M-technik-3 M-technik-3 is offline
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Crank hp, all factory figures are crank. Unless otherwise stated. A chip will help but you won't see a dramatic change. a header will gain a few extra hp numbers used in conjunction with a free flowing exhaust.

thank of your engine as an air pump or water pump... It only as efficent as a whole, I have been told by a quite a few knowledgeable people that the head and valves are the limiting factor.
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  #3  
Old 05-12-2005, 08:01 AM
bodiger bodiger is offline
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Sorrry to but in , i have a 89 325 as well- should i save up for the turbo kit instead of doing the minor alterations?
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  #4  
Old 05-12-2005, 08:05 AM
bodiger bodiger is offline
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i was trying to figure out about hp as well. so far ive researched the blue print of this sleeper that bigger engines (m3-m5)are being put in this car. I rather do that then be stuck under 200hp.
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  #5  
Old 05-12-2005, 06:02 PM
bimmerz89 bimmerz89 is offline
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I have an 87 325i and i added a chip and K&N intake imported for the european models and it made a world of difference on my car. It was tested at just under 200hp with only those mods done to it. I would like to save up and get some schnitzer exhaust though
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  #6  
Old 05-12-2005, 06:04 PM
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Quote:
Originally Posted by bimmerz89
I have an 87 325i and i added a chip and K&N intake imported for the european models and it made a world of difference on my car. It was tested at just under 200hp with only those mods done to it. I would like to save up and get some schnitzer exhaust though
What kind of test measured it at 200 HP?

Alex
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  #7  
Old 05-12-2005, 07:23 PM
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Quote:
Originally Posted by bodiger
Sorrry to but in , i have a 89 325 as well- should i save up for the turbo kit instead of doing the minor alterations?
I think if you want a turbo,first you need to strenghten your engine.(cams,valve springs intake,and such.)Turbo is a problematic thing on the m20.I would not want one.But,thats just me.
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  #8  
Old 05-12-2005, 07:25 PM
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Originally Posted by BahnBaum
What kind of test measured it at 200 HP?

Alex
Ooops. Just noticed where you're posting from; must be Canadian horsepower.

Alex
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  #9  
Old 05-12-2005, 08:02 PM
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Question

got a dinan chip,which claims to add 26HP
I only count a couple on the intake(not cold air)
remus catback=15HP
AC headers=10HP
--------------------------------------
225HP??Thats probably not how it works.

anyways as soon as I get the exhaust and headers,I will dyno test it.
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  #10  
Old 05-12-2005, 08:16 PM
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Quote:
Originally Posted by 9x16
got a dinan chip,which claims to add 26HP
I only count a couple on the intake(not cold air)
remus catback=15HP
AC headers=10HP
--------------------------------------
225HP??Thats probably not how it works.

anyways as soon as I get the exhaust and headers,I will dyno test it.

Sorry, wrong person. The other guy said it dyno'd at over 200 hp.

If you're making 200 at the rear wheels, I'll give you a dollar.

Alex
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  #11  
Old 05-13-2005, 12:06 PM
bodiger bodiger is offline
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Question

25bhp from the dinan the reading posted for gain are: Peak Horsepower Gain: 15 @ 5000 rpm
Peak Torque: 177 lb/ft @ 4500 rpm.
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  #12  
Old 05-13-2005, 01:45 PM
speeds speeds is offline
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Quote:
Originally Posted by 9x16
I have an 89 325i.As we all now it has about 170hp stock.Where does it have that power?At the flywheel,or at the wheel?(whp?).Also to increase the power ,so far I put a perf.chip,and an intake in it.Soon to come remus catback and AC Schnitzer exhaust manifold.How much ponies should I expect then? Thank guys!
i think that with does mods you should be close to the 200 hp figures, but if you really looking to gain more power try a cam with a port and polished head. you'll get the power your looking for and it'll be safer than forced induction.
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  #13  
Old 05-13-2005, 01:46 PM
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Quote:
Originally Posted by speeds
i think that with does mods you should be close to the 200 hp figures, but if you really looking to gain more power try a cam with a port and polished head. you'll get the power your looking for and it'll be safer than forced induction.
You're not going to be anywhere close on a dyno.

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  #14  
Old 05-15-2005, 08:16 AM
M-technik-3 M-technik-3 is offline
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Having lived in Germany the last 4 years and having 6 e30's in various forms and models. There is No way that a K&N gave you 200 hp. Maybe 175 up a whole 1 hp from EU spec no cat 87 325i since the iS did not exist in EU.

I also had a built 2.7l and that only made 194 hp and had a hot 292 cam.
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  #15  
Old 05-18-2005, 01:06 AM
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Quote:
Originally Posted by M-technik-3
Having lived in Germany the last 4 years and having 6 e30's in various forms and models. There is No way that a K&N gave you 200 hp. Maybe 175 up a whole 1 hp from EU spec no cat 87 325i since the iS did not exist in EU.

I also had a built 2.7l and that only made 194 hp and had a hot 292 cam.

We are talking about a chip and an intake.Not just the intake!
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  #16  
Old 05-18-2005, 08:14 AM
M-technik-3 M-technik-3 is offline
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Still not going to make that much.... Chip and an Intake does not net that much. If it did the factory would have done it.

Let's see the dyno chart to back this up. Alpina was making 205 to 215 hp for their wild C2 and B6's. And EU has 98 octane pump gas available as opposed to US here in the US.

When I moved from Germany bak to the US this year I brought all of my goodies I acquired. I brought a long tube Hartge header with a 87 catless Factory exhaust, a ecu for the EU car and a variety of pistons. I brought some heads too. I need to recover my 733 head with my schrick cam in it. It's still at my friends shop.
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  #17  
Old 05-18-2005, 09:45 AM
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One of the issues of The Roundel a few months back did before and after dyno runs on a 325i (iS maybe?) to measure the difference a Jim C. chip would make. The claim was ~15 hp I think, the actual gain on the dyno was more like 19 hp and 18 ft/lbs... The "If it did the factory would have done it." argument just doesn't hold water. The chip is designed to run on 93 octane while the factory wanted the enigne to run on 89. Optimizing the engine management for that alone is worth pretty good power. The intake also has different needs from the factory and aftermarket. The factory needs to be concerned with noise and with making sure that no water gets injested short of driving into a lake. Aftermarket intakes can be much louder since it's designed for the enthusiast who quite often wants the extra noise. They also don't need to be quite as careful about keeping water out of the intkae, they just need to ship it with a warning to not drive through deep puddles...
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  #18  
Old 05-18-2005, 10:22 AM
M-technik-3 M-technik-3 is offline
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It does hold water as the fuel filler door as well as the gas cap says to use Super benzin. Super Benzin in EU is 98 ron octane and is far higher than most US crap.

My 89 325i was a euro delivery and still has a variety of odd ball things and the fuel cap was one of them. The dash doesn't have a vin number on it either. I have the paper work stating a GI picked up from the factory and had fun in Germany with for 3 years before bringing it back to the US.

Now I am not sawing that chips are garbage but I have yet to see anyones car put out over 200hp on just a chip and an intake. I know quite a few track rat guys with various iterations of M20's, and I own two myself plus a M50'd car. So until I see a dyno chart I cry the big BS flag.

And the factory did want to get the most HP numbers in EU out of them safely. These were their bread and butter sellers. Like the Mustang is here for Ford. Most people in Germany could not afford an M3 in 1986-91 time frame. They were just too much DM at the time. Most people were still driving around in VW Gti mark I's or other hot hatches.

Times have changed there big time now, it's not uncommon to see 3 or 4, 645i's running around in Frankfurt at anytime. Or big S class or A8's.
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Old 05-18-2005, 11:45 AM
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Well your euro delivery obviously would be different than what 99% of the people here drive which would be a regular unleaded drinking US spec model. I have no idea what if anything a chip would do for your model, put for the US spec ones it apparently makes a pretty good difference in power for the cost if you believe the magazine's dyno tests.

Quote:
And the factory did want to get the most HP numbers in EU out of them safely. These were their bread and butter sellers. Like the Mustang is here for Ford.
Again, I don't know what exactly they did with the euro model but virtually every production car sold here (including the Mustang) has compromises that restrict horsepower in the name of keeping the car quieter, more reliable in all possible driving conditions, etc... This is why intakes are such a popular mod. It's a relatively cheap way to lose intake restriction on most cars (From what I've heard that's not a big problem on E30s anyway) with a tradeoff of extra noise that the factory didn't want because they know that most buyers are not willing to put up with it for those extra few ponies.
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Old 05-20-2005, 04:05 PM
elroy elroy is offline
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Thumbs down Don't waste your time with the air filter.

The chip is fun; it lets you rev higher and removes the top speed governor. Idle speed is as low as it can go smoothly (it learns over time). Feels a little more punchy in the powerband. (I have the bavarian autosport chip, other software may vary in effect.)

However, those air intake kits are stupid. The stock E30 air intake is a cold-air-intake setup, its quiet and effective. You slap on one of those cone filters, it's going to be sucking in hot (thin) air from your engine compartment and will won't add a signifigant performance boost (in fact, it may even take a toll on your power in exchange for quicker throttle response). Stick with the $8 German air filter from MANN in the stock airbox.

Oh, and the exhaust isn't going to add any HP either. It'll just change the sound.

BMW engineered the engine with a delicate equilibrium. If you start screwing with the air flow rate, then you have to adjust the fuel input to compensate, which requires new ECU software, etc. Don't mess with it. Just get your stock setup running as perfectly tuned as possible (valve adjust and all that), then consider the classic NA tuning stuff: performance cam, valving, stroking the engine to 2.7L -- or just do an engine swap, the E30 is one of the best swap cars. Just about any BMW engine will fit.
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  #21  
Old 05-28-2005, 02:33 PM
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Yeah,I was thinking about an s52 swap,but Im not in the budget for it right now.I'd rather restore my car for that money.im mean the body.
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  #22  
Old 10-13-2007, 09:44 AM
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What if you were to get the cone air intake with a heat shield? It won't suck up the hot air from the engine correct?
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  #23  
Old 10-14-2007, 01:54 AM
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its hard to say, youll get fresh air from the front of the car, but youll still get the heat from the engine but if you want to keep the air cool, you can wrap the intake tubing with an heat resistant wrap, and you can run a custom CO2 system, kind of like the nitrous express n-tercooler system. thatll keep the air cool
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Old 10-14-2007, 09:44 AM
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Quote:
Originally Posted by downhiller View Post
its hard to say, youll get fresh air from the front of the car, but youll still get the heat from the engine but if you want to keep the air cool, you can wrap the intake tubing with an heat resistant wrap, and you can run a custom CO2 system, kind of like the nitrous express n-tercooler system. thatll keep the air cool

Should I google those parts?
Sounds crazy, any references you can give me?
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  #25  
Old 10-14-2007, 12:25 PM
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http://www.archcartpro.com/users/aut...&Vendor=&Year=

http://www.designengineering.com/pro...asp?m=sp&pid=4

http://www.designengineering.com/pro...asp?m=sp&pid=9

theres some that i was able to locate. the exhaust wrap will lower underhood temps and you can find that at almost any performance store.
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