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View Full Version : Sr20det bogging at 400rpm...???

shawn240sx
11-04-2007, 12:37 AM
I just installed an sr20det blacktop, everything went in smooth, idle is good, no boost leaks, turbo is good...minimal to no shaft play, no leaks, oil is at spec, oem BOV...only upgrade is a walboro 255 , mishmoto and air intake, done during the install.
At 4000rpm in every gear it seems to bog and hold back???? Any one experience this before?...if so solution ? any advice much appreciated.
CAS was adjusted to spec.
EJ253
11-04-2007, 12:56 AM
thats right when boost comes on for the most part
check your sparkplugs.
re-gap them to .030

or maybe theyre fryed
tt99ol
11-04-2007, 01:18 AM
check your ignition timing also should be 15 +/- 2 Degrees or the 5th mark from the left
shawn240sx
11-04-2007, 03:27 AM
I will try the regap i think mine are at .036
RACETUNE
11-04-2007, 06:27 AM
MAF or that Fuel Pump you are using
shawn240sx
11-05-2007, 01:31 AM
Damn! I reset the gap on sparkplugs to .030 and still the same thing.
Maf I will have to check...wish I knew someone local who could let me test this.
I hope not the new walboro??...is this common?
Thank you for the help Racetune.
AznDrftr.
11-05-2007, 01:35 AM
LOL, yea mines doing that now, but not exactly sure. Just happened tonight. It bogs roughly when boost is kickin around 3k RPM. Check MAF though for sure.
tt99ol
11-05-2007, 01:39 AM
walbros dont make sr's run bad, what did your plugs look like when you pulled them out?
projekt_s13
11-05-2007, 02:45 AM
I have a Sr MAF you can use to test.
Let me know
shawn240sx
11-05-2007, 09:47 AM
Projekt, thanks for the offer...I am gonna try the sohc maf if it doesnt work I will contact you.
I want to thank everyone for their replies and I will post the outcome. Maybe this will help some guys with a similar issue.
Re: Spark plugs I pulled and regapped, they had a little bit of a white hue on the metal.
SILVIA_KIDs14.5
11-05-2007, 10:05 AM
most likely you MAF i had a similar problem pickup a z32 Maf and worked like a charm no problems since good luck
unicoladron
11-05-2007, 10:07 AM
set your ecu into diag mode and see if it throws any codes.
shawn240sx
11-05-2007, 03:06 PM
My blacktop ecu is an e5 but is missing the LED, either it broke off during shipping?...or just was neva put on?....how do I run diagnostic mode? Does the check engine light give me codes this way? I just dont want to mess up the ecu.
Z32 maf replacement will not require a re tune on the ecu?....
THanks everyone for your input...