RX7Club.com - Mazda RX7 Forum - Driveability Issues

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1NSIGHT

11-03-16 07:46 AM

Driveability Issues

I have an issue with transient throttle. quick stabs and the motor bucks... I have talked to a friend and he said that the map sensor on the engine needs some type of vacuum dampening inorder to smooth out readings to the ECU.
I cant really replicate the quick load changes on the dyno.
Has any one heard of that being an issue?

I am running a Haltech ECU.

clokker

11-03-16 08:24 AM

The stock MAP sensor does have a restrictor pill in the vac line to dampen the signal.

1NSIGHT

11-03-16 08:38 AM

Ok then,

I probably through it away years ago.

Is it something like this?

satch

11-03-16 08:54 AM

Quote:

Originally Posted by 1NSIGHT (Post 12121054)

Ok then,

I probably through it away years ago.

Is it something like this?

https://www.rx7club.com/attachments/...precontrol.jpg

Mazdatrix sells something just like it for about $5. One can make their own, though.

1NSIGHT

11-03-16 09:09 AM

I think the Dorman one I linked should work fine. If it is just a restrict or to slow down the pressure differential.

This has been an issue with my tune for years. and its been so annoying.

clokker

11-03-16 09:35 AM

Quote:

Originally Posted by 1NSIGHT (Post 12121062)

I think the Dorman one I linked should work fine.

Don't think so, it's too big.
The orifice in the stock pill is about 1/16".

1NSIGHT

11-03-16 09:57 AM

3/16 is the O.D.

Pic of the restriction

Im gonna head to oriellys and let you know for sure.

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