:::RHMT::: Real Home Made Turbo

General Category => Forced Induction => Topic started by: davidawg on July 01, 2010, 08:12:01 PM

Title: hesitation issue
Post by: davidawg on July 01, 2010, 08:12:01 PM: i have this bogging/hesitation issue that i can not figure out. it does it from 0-7psi and 25%-90% throttle. it shows low to mid nines on the afr gauge when it does this too.

did a boost leak test, nothing. ive tried leaning it out, nothing. swapping to an old tune that i know works, nothing. new thottle position sensor, nothing. swapped o2 sensor, nothing. swapped coil over plugs, nothing. my spark plug gap is at 26-28.

you can hear the problem in this video from 0:35- 0:40
turbo zx2 vs modified evo 9 mr 1 (http://www.youtube.com/watch?v=EP7iLuCH1eY#normal)

im out of ideas...

a lil something to help ya think, lol
(https://realhomemadeturbo.com/forum/proxy.php?request=http%3A%2F%2Fimg157.imagevenue.com%2Floc429%2Fth_27970__05_123_429lo.JPG&hash=d19f259224f6a6695faee60efb7d82bf094408c4) (http://img157.imagevenue.com/img.php?image=27970__05_123_429lo.JPG)(https://realhomemadeturbo.com/forum/proxy.php?request=http%3A%2F%2Fimg263.imagevenue.com%2Floc583%2Fth_27971__8_1_123_583lo.JPG&hash=e3cdfdfcb66287c676fa42afe3a46671f74081cd) (http://img263.imagevenue.com/img.php?image=27971__8_1_123_583lo.JPG)(https://realhomemadeturbo.com/forum/proxy.php?request=http%3A%2F%2Fimg148.imagevenue.com%2Floc258%2Fth_27972__9_1_123_258lo.JPG&hash=c2120d8f332fd76cb936cf8cb232abe9859259b3) (http://img148.imagevenue.com/img.php?image=27972__9_1_123_258lo.JPG)
(https://realhomemadeturbo.com/forum/proxy.php?request=http%3A%2F%2Fimg209.imagevenue.com%2Floc59%2Fth_27972__21_123_59lo.JPG&hash=583cd1b8d01c81483a2bc35be8a44a52218d8a95) (http://img209.imagevenue.com/img.php?image=27972__21_123_59lo.JPG)(https://realhomemadeturbo.com/forum/proxy.php?request=http%3A%2F%2Fimg45.imagevenue.com%2Floc190%2Fth_27973__31_1_123_190lo.JPG&hash=97d8162c9cef0e464eb3f9e20e12462059753e2d) (http://img45.imagevenue.com/img.php?image=27973__31_1_123_190lo.JPG)(https://realhomemadeturbo.com/forum/proxy.php?request=http%3A%2F%2Fimg203.imagevenue.com%2Floc80%2Fth_27975__071_123_80lo.JPG&hash=278a69f6cd0e7704bc935ed69e91667cf0e78bef) (http://img203.imagevenue.com/img.php?image=27975__071_123_80lo.JPG)
(https://realhomemadeturbo.com/forum/proxy.php?request=http%3A%2F%2Fimg166.imagevenue.com%2Floc359%2Fth_27976__ONIKA_123_359lo.JPG&hash=1f700aaf7f74d6859b1683051d7dc2988e074205) (http://img166.imagevenue.com/img.php?image=27976__ONIKA_123_359lo.JPG)(https://realhomemadeturbo.com/forum/proxy.php?request=http%3A%2F%2Fimg229.imagevenue.com%2Floc428%2Fth_27977__EACH2_123_428lo.JPG&hash=5354da46cff8b504eb8691a8b7b59ea4cf7f1699) (http://img229.imagevenue.com/img.php?image=27977__EACH2_123_428lo.JPG)
Title: Re: hesitation issue
Post by: Urban Indian on July 01, 2010, 09:03:45 PM: welcome to my life last year
Title: Re: hesitation issue
Post by: davidawg on July 01, 2010, 09:15:55 PM: what was the answer to your problem?
Title: Re: hesitation issue
Post by: dvst8r on July 01, 2010, 11:10:43 PM: Quote from: davidawg on July 01, 2010, 09:15:55 PM
what was the answer to your problem?

Tom Sewell
Title: Re: hesitation issue
Post by: davidawg on July 02, 2010, 03:22:33 AM: Quote from: Urban Indian on July 01, 2010, 09:03:45 PM
welcome to my life last year
wtf??????
i read through 16 pages and your problem magically goes away? fuck my life!
Title: Re: hesitation issue
Post by: ifly87 on July 02, 2010, 03:49:48 AM: is the boost fluctuating at all? like compressor surge?
Title: Re: hesitation issue
Post by: davidawg on July 02, 2010, 03:51:53 AM: boost jumps up(like two step i guess)
Title: Re: hesitation issue
Post by: 2slow on July 02, 2010, 06:24:39 AM: You should try throwing more parts at it :noel:
Title: Re: hesitation issue
Post by: lilpooh21186 on July 02, 2010, 08:45:40 AM: your motor doesnt like 9-1 afr's
Title: Re: hesitation issue
Post by: davidawg on July 26, 2010, 03:00:49 AM: these are the parts ive thrown at the car since...
cranksahft position sensor
camshaft position senosr
maf
head gasket
ecu/pcm/ecm/computer(whatever you like to call it)
i tried running it n/a and it missed up top too

what else is left?
Title: Re: hesitation issue
Post by: Ntrain2k on July 26, 2010, 06:33:41 AM: It's probably having problems lighting off low to mid 9 AFR's.

Lean it out in that area.
Title: Re: hesitation issue
Post by: davidawg on July 26, 2010, 09:49:04 AM: ive already tried that and swapping to an old tune that worked without any problems
Title: Re: hesitation issue
Post by: Joseph Davis on July 26, 2010, 12:52:24 PM: What are you using to tune it?
Title: Re: hesitation issue
Post by: t_cel_t on July 26, 2010, 04:39:49 PM: Quote from: davidawg on July 26, 2010, 03:00:49 AM
these are the parts ive thrown at the car since...
cranksahft position sensor
camshaft position senosr
maf
head gasket
ecu/pcm/ecm/computer(whatever you like to call it)
i tried running it n/a and it missed up top too

what else is left?

there's your problem
Title: Re: hesitation issue
Post by: Joseph Davis on July 26, 2010, 05:06:37 PM: You know nothing about Fords.
Title: Re: hesitation issue
Post by: 98vtec on July 26, 2010, 07:11:10 PM: lol
Title: Re: hesitation issue
Post by: davidawg on July 26, 2010, 08:44:24 PM: im using delta force's special forces tuning. we zx2 people only have sct and delta force to choose from as a simple tuning solution. i chose delta forces cause it allows you to tune two vehicles for the price of one and i own two zx2's.
Title: Re: hesitation issue
Post by: Joseph Davis on July 26, 2010, 09:20:04 PM: I'm not familiar with their product, I've been porting them into Binary Editor and then flashing unlimited vehicles through a Drew Tech Mongoose SCI cable

Does it allow you to deal in binaries? Or is the tunefile unencrypted so you can yank the .bin out of it like SCT's .mtf files? Also, got datalogs? One general log and 1-2 really short ones that replicate the problem should do.