How to increase throttle response?

[Liam]

The Japanese have a very funny way of testing and calculating horse power as well.

[z31maniac]

Why is that so hard to believe? Most aftermarket software manufacturers claim around the same gains - with the AFM intact.

From Pelican:

"I recently go a hold of a Dinan performance chip for my E30. The benefits of this chip include raising the factory rev-limiter to 6900 RPM and increases horsepower from 168 to 183. It does this by essentially re-configuring the fuel injection map to advance the timing, fuel pressure, etc. This translates into a dramatic seat of the pants change in power, or as we refer to it, the butt dyno."

http://www.pelicanparts.com/bmw/tech...ip_install.htm

Guess you didn't read Taylor's thread either. The MarkD chip is widely considered the best M20 chip on the market, I believe it made around 1.5HP more peak HP than a stock chip.

And it's supposed to be better than the TMS chip that claims a +15HP gain. Think about that.

I know in the Jap market stuff, they would sell a header claiming 10+ HP on your engine. But what they wouldn't tell you is that its some monster cammed, high comp N/A beast where the only restriction left is the header. So on THAT motor it would unleash that kind of power, but not on a car with a "stock" engine, ie no cams/pistons/bore:stroke, etc.

[BenM]

i wonder if you could use their maf and the new "war" chip together...it says that the war chip is for 95 and older cars, so that means e30s, right?

Yes, Motronic 1.1/1.3 cars.

[Liam]

because they ALL exaggerate gains. Especially that Dinan chip.

also, a chip cannot adjust fuel pressure, so why would you believe their stated HP claims? ;)

HP claims are what they are (always has been).

I just want to play with it.

I've had a few things rolling around in my head for a while now that this may be part of the solution to.

I talked to them a while back to discuss the possibility of working on a joint project and they blew me off so I just bought one and I'll work it out myself.

[nando]

Why is that so hard to believe? Most aftermarket software manufacturers claim around the same gains - with the AFM intact.

From Pelican:

"I recently go a hold of a Dinan performance chip for my E30. The benefits of this chip include raising the factory rev-limiter to 6900 RPM and increases horsepower from 168 to 183. It does this by essentially re-configuring the fuel injection map to advance the timing, fuel pressure, etc. This translates into a dramatic seat of the pants change in power, or as we refer to it, the butt dyno."

http://www.pelicanparts.com/bmw/tech...ip_install.htm

because they ALL exaggerate gains. Especially that Dinan chip.

also, a chip cannot adjust fuel pressure, so why would you believe their stated HP claims? ;)

[Moto-Mucci]

e-mail them

[dannyyisntt]

i wonder if you could use their maf and the new "war" chip together...it says that the war chip is for 95 and older cars, so that means e30s, right?

[Moto-Mucci]

my apologies if you've already touched on these but don't overlook taking weight out of the car (sound deadening, etc). Also, what rear end is in the car? 4.10s are pretty easy to get.

This is a daily driver and in pretty good shape. I'd like to keep everything pretty intact.

I've got the stock 3.73 diff in there as far as I know. Haven't checked if the PO swapped it, but he was pretty thorough on the mods so I doubt it.

[Dillinger]

even with a chip, it's not going to happen. I saw 10hp by losing the AFM and going to MAP, and this wasn't a stock motor. how are you going to get 20hp by basically doing the same thing to a stock motor, and then use an off the shelf chip rather than a dyno tune for that specific motor?

Once you have this maf and chip you could tweak it couldn't you?

[Moto-Mucci]

it's really easy to exaggerate the correction factors to get more favorable results. Just consider them highly optimistic..

Why is that so hard to believe? Most aftermarket software manufacturers claim around the same gains - with the AFM intact.

From Pelican:

"I recently go a hold of a Dinan performance chip for my E30. The benefits of this chip include raising the factory rev-limiter to 6900 RPM and increases horsepower from 168 to 183. It does this by essentially re-configuring the fuel injection map to advance the timing, fuel pressure, etc. This translates into a dramatic seat of the pants change in power, or as we refer to it, the butt dyno."

http://www.pelicanparts.com/bmw/tech...ip_install.htm

[nando]

So you think they botched their dyno graphs then?

it's really easy to exaggerate the correction factors to get more favorable results. Just consider them highly optimistic..

[Lance Racing]

my apologies if you've already touched on these but don't overlook taking weight out of the car (sound deadening, etc). Also, what rear end is in the car? 4.10s are pretty easy to get.

[Moto-Mucci]

they probably had to change the load transfer function for the AFM to deal with the MAF. I don't think the signal from the AFM is linear, but the MAF is.. so makes sense you can't use another chip with their maf. It still won't give you 20hp on a stock motor though. ;)

So you think they botched their dyno graphs then?

[nando]

they probably had to change the load transfer function for the AFM to deal with the MAF. I don't think the signal from the AFM is linear, but the MAF is.. so makes sense you can't use another chip with their maf. It still won't give you 20hp on a stock motor though. ;)

[Moto-Mucci]

Miller's response:

"Hi David,

No, you can't run any other software with the MAF conversion. The tune
is so much different with a MAF that a chip designed for the AFM will
not work. Our chip that comes with the MAF is tuned to optimize
performance and allow your car to run smoothly on the MAF sensor.

--
Brody Saari"