anyone have dyno numbers for a stock e30 m20b25?

[BavBeater85]

I dynoed at 145whp with my 19# injectors and tuned accordingly Mark D chip...I talked to Mark D and he said he thinks those numbers are a little low...anyone have a dyno sheet with more power for this exact setup? Its an M20b25

[bmwguy325is]

http://www.r3vlimited.com/board/showthread.php?t=249970

[jlevie]

What dyno? The results vary according to the dyno used with a DynoJet tending to read higher. 145rwhp is going to be about right for a 100k or more engine. The chip adds a little and injectors nothing. A really good head rebuild would pick 5-7hp (or maybe a bit more or less depending on the ring and bore wear)

[BavBeater85]

Id have to find the sheet, not sure what dyno it was

[LJ851]

Just dyno'd my bone stock 200k mile b25 today and it made 136 hp on dynojet.

[EVillalonRN]

On the Dynojet I got 136hp 140tq. Stock M20B25 except K&N box filter and 17lb injectors.

[robgoesvroom]

who dyno'd their car and has a stock M20 with MarkD chip for stock injectors? (stock exhaust w/ OE cat as well)

[e30leigh]

we dyno'ed our 100k m20b20 series race car at work and it ran 101whp, with new plugs, air filter and the valve clearances set correctly we ran it again and picked up 106whp.
(the running gear must be 100% factory and sealed against tampering for the series rules.)

[jlevie]

My race car with totally stock blueprinted engine made 162hp/159tq on a dyno jet on a 100 degree day. On a cooler day it would have made a bit more.

[BavBeater85]

yeah, I wish I had the capability of blueprinting an engine...I really dont even have the means for a regular rebuild

[jlevie]

Blueprinting an engine isn't all that difficult. It takes a lot of labor, an extreme attention to detail, and about $5k of precision measuring tools. You will also have to have access to a machine shop with experience in building race motors for balancing and machine work.

[110stx]

Checking in with dynojet results on stock M20b25: 142 peak hp, 145 peak torque.

Rebuilt cylinder head, serviced injectors, Mark D. 93 octane chip, long-tube Stahl headers, a K&N drop in -- 148.5 peak hp, 152 peak torque.

d.hitchcock

[$hane]

A dyno is a tool used for tuning. The numbers are not absolute and they will read differently based on what correction factors the operator has in them.

There are a couple subaru tuning shops here and in the bay that got tired of the numbers debate and took a weekend and put 3 different cars of various power levels on all of their dynos and programmed them to all read the same. I believe all 3 were mustang dynos.

I think you should be more concerned with how the car is running and how the power band is. Are there any flat spots? hows your idle? Does it fall on its face after 6k?

[BavBeater85]

yeah, if you read my other post about blue smoke youll see thats my concern....the idea to getting answers is asking the right questions...sometimes one question wont answer it but several put together will right a story...i in particular just wanna see how bad I am...obviously not to bad if everyones comin up with similar numbers then Im good, but if everyone else is putting out JLevies numbers and im only at 145, then theres a real issue. but my concern is getting the car mint...then Ill worry about power

[$hane]