dyno'd the 2.7i

[ForcedFirebird]

Park the car on top of the rollers, strap from the front around the rims on the grate, rear to some bolts in the floor is how they have done the last few cars I had in there. They have grown from 2 bays to 7 or 8 in the last year. They do a lot of Subi's, but mostly EVO's. They have a few 8 second cars.

[accident]

oh how i would love to go for a ride in an 8 second car.

[digger]

you can make 205RWHP in a 2.8 without ITB's

You need 12.5 compression and larger valves and a nasty cam running on 100oct. We are seeing 190 RWHP out of a 2.5L with the same set up. I would imagine the car is undrivable on the street but it is a great race car.

i would be intersted in seeing the plot from this dyno if you can post it up.

[ForcedFirebird]

i would be intersted in seeing the plot from this dyno if you can post it up.

He has. ;)

[briansjacobs]

He has. ;)

actually the sheet I posted was from my car. I will see if I can get my hands on the dyno sheet from the 2.5L car.

I will be retuning my 2.8 to run on pump gas soon, will post whenever I get around to running it.

[digger]

He has. ;)

where? there is a plot but no numbers

[briansjacobs]

where? there is a plot but no numbers

correct, I do not post numbers on my car. mainly because numbers are bullshit, I can make the numbers what ever I want if I am controlling the dyno which I am.

the important thing to look at is the amount of time you have HP and TQ. if you only have it for 1000 RPM you have a car that useless! My car has TQ that is usefull for 2500 RPM and HP that is usefull for about 2000 RPM coming in about 600 RPM after the TQ, all while maintaining AFR that is 11.9-12.4 from 2000 RPM to REDline. that is a very useable power curve that took hours and hours of dyno tuning and that is more impressive to me than a car that makes 50 more peak hp but has no useability and an AFR that is going to blow a gasket at anytime

[Sagaris]

.... and an AFR that is going to blow a gasket at anytime

[digger]

correct, I do not post numbers on my car. mainly because numbers are bullshit, I can make the numbers what ever I want if I am controlling the dyno which I am.

the important thing to look at is the amount of time you have HP and TQ. if you only have it for 1000 RPM you have a car that useless! My car has TQ that is usefull for 2500 RPM and HP that is usefull for about 2000 RPM coming in about 600 RPM after the TQ, all while maintaining AFR that is 11.9-12.4 from 2000 RPM to REDline. that is a very useable power curve that took hours and hours of dyno tuning and that is more impressive to me than a car that makes 50 more peak hp but has no useability and an AFR that is going to blow a gasket at anytime

Its fine to have a nice band where the torque curve is flat and to have hp that doesn't suddenly hit the wall at high rpm but ultimately magnitudes are important. If you run a stock car on same machine then you can get a reasonable enough baseline.

If you post a graph there will be those who don't know what they are looking at or talking about but those that matter will know.

Ultimately this a forum where people come to learn and discuss so showing real results and what can and can't be achieved is very useful to many as it builds the knowledge base.

[ForcedFirebird]

Just about ready to go back! Got the tune going good, can't believe how lean the car was, nor the fact that the timing was wayyyyy off. Car pulls even stronger than ever now,and the timing was bumped from the stock by a long shot. Doubled in some places 0.o.

We also tuned a stock 2.5, as well as a 272 cammed 2.5 and the 2.7i likes something totally different. I have a feeling that many people running the 885 head on a stock ETA bottom, even if chipped, could be making more power if the chip in use, was designed for a actual "blueprinted" stroker and not stock BMW parts miss-matched together. So far I have done street tests on some other major chip sellers and they don't work that great in my car compared to my street tune.

The 272 car after a street tune, the owner told us that it felt the same as his internet-purchased chip, only ours idled better and felt a little smoother.

[ForcedFirebird]

Stock injectors went static today at stock pressure, big surprise ROFL!

Last trip had stock inj at 65psi/stock tune...

[ForcedFirebird]

Here's the 2.7i with stock inj running 65psi through them, stock tune...



and stock inj with 3bar (43.5psi) tuned...



Can you guess where the injectors ran out? haha!

EDIT: don't try and decipher between the two, we had them change the scale mowahaha.

[ForcedFirebird]

on the rollers


pic of their shop (they have an 8sec EVO)


new injector harness


new injectors


Felt so inadequate compared to some cars there, but they like us haha

[accident]

now the dyno makes more sense lol

[call me jack]

Just about ready to go back! Got the tune going good, can't believe how lean the car was, nor the fact that the timing was wayyyyy off. Car pulls even stronger than ever now,and the timing was bumped from the stock by a long shot. Doubled in some places 0.o.

We also tuned a stock 2.5, as well as a 272 cammed 2.5 and the 2.7i likes something totally different. I have a feeling that many people running the 885 head on a stock ETA bottom, even if chipped, could be making more power if the chip in use, was designed for a actual "blueprinted" stroker and not stock BMW parts miss-matched together. So far I have done street tests on some other major chip sellers and they don't work that great in my car compared to my street tune.

The 272 car after a street tune, the owner told us that it felt the same as his internet-purchased chip, only ours idled better and felt a little smoother.

i guess i'm a little confused. i thought there was a chip available for e to i strokers....