Where do WE stand with the HPFP & MAF? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

BaylorCamaro · 07-13-2012, 11:15 AM

Alright so I made this thread because we as a community have been discussing these two different issues in like five or more other threads and it's hard to follow and find what was posted in all these different areas.

We're still very much in the infancy of having a FI V6 5th gen Camaro, and as such we're still running into problems and finding new ones. The biggest issues currently seem to be the stock fuel stystem and our (weak) mass air flow sensor.

First off, I know we have a couple guys toying around with the HPFP and Smoke is sending his car back down to Tracy so they can play with the OD pulley and HPFP and get a proper tune, so all of us super charged guys putting out more than 6 psi of boost can actually see some serious gains. Where do we currently stand with the tune on the aftermarket HPFP? I ask only becaue I know one or two people have it and think it seems to be working, but then when I was talking to Vince a couple days ago, he claimed he's not too sure it's working 100% and is very skeptical.

Secondly, I believe it was Can't C Me that was going to try out the JET MAF, is there any news on that? This seems to be another issue we have and that is maxing out our MAF sensor.

Lets try to use this thread to facilitate discussion about the HPFP and MAF, as it's a PITA to filter through several threads to find the info.

GretchenGotGrowl · 07-13-2012, 11:23 AM

Here's we I am.

Put it back on the dyno yesterday afternoon with the new intake setup and tried a few tunes. Something isn't right, but we just don't know what it is. At first it looked like the in-tank pump wasn't keeping up, but that didn't make sense since we weren't flowing any more air so we shouldn't have needed more fuel. Looked at it to make sure there was nothing wrong with it and it seems okay. Now we are getting misfires on two cylinders. Going to swap the plugs out and see if that fixes it. Really not sure what is going on at the moment. I'm headed over there in about an hour and will try to update as we work through this.

BaylorCamaro · 07-13-2012, 11:28 AM

Quote:

Originally Posted by GretchenGotGrowl

Here's we I am.

Put it back on the dyno yesterday afternoon with the new intake setup and tried a few tunes. Something isn't right, but we just don't know what it is. At first it looked like the in-tank pump wasn't keeping up, but that didn't make sense since we weren't flowing any more air so we shouldn't have needed more fuel. Looked at it to make sure there was nothing wrong with it and it seems okay. Now we are getting misfires on two cylinders. Going to swap the plugs out and see if that fixes it. Really not sure what is going on at the moment. I'm headed over there in about an hour and will try to update as we work through this.

Good luck man! You running on an after market HPFP or just meth? Also if you start getting a lot of misfires it could be your MAF sensor failing. I know all about that

GretchenGotGrowl · 07-13-2012, 11:31 AM

We are just running pump gas with the new HPFP. Will do a meth/water tune once we get this one worked out. I'll run the MAF thing by Vince, but I think he would have seen something in the logs.

smoke1lt · 07-13-2012, 11:33 AM

Thanks for the info Gretchen,I hope you can get it dialed in.Keep us updated.

GretchenGotGrowl · 07-13-2012, 11:36 AM

Quote:

Originally Posted by smoke1lt

Thanks for the info Gretchen,I hope you can get it dialed in.Keep us updated.

Will do. Sure hope it can be sorted out because I don't think we can get it back to the way it was when before the intake changes in time to go to CFest.

BaylorCamaro · 07-13-2012, 11:48 AM

Quote:

Originally Posted by GretchenGotGrowl

Here's we I am.

Put it back on the dyno yesterday afternoon with the new intake setup and tried a few tunes.

By new intake set up do you mean large MAF tube? If so what size? I'm VERY curious about this, as I'm running 3.5" currently and Vince said going to a larger tube might fix the maxing out of the MAF sensor problem. However, Tracy said they tried a 4" on someones car and it didn't work. So we're stuck between a rock and a hard place..

smoke1lt · 07-13-2012, 11:48 AM

Quote:

Originally Posted by GretchenGotGrowl

Will do. Sure hope it can be sorted out because I don't think we can get it back to the way it was when before the intake changes in time to go to CFest.

Yeah not much time left to be making alot of changes now if your going to make the fest.Might have to look at Tracy's first fuel solution ,with the exta injectors,if i remeber right it was hooked up with a contorler ,so it would be able to give the right amount of fuel when needed.It cost more but sounds like it would give better control of the fuel.I dont know if he tested it out on a running FI car to get it tunned in.Just one more option to look at if all else fails.

BaylorCamaro · 07-13-2012, 11:55 AM

ugh, adding extra injectors sounds like the last thing I want to do right now, lol..

BaylorCamaro · 07-13-2012, 12:57 PM

Quote:

Originally Posted by SC2150

We are now testing the 4" MAF tube and it seems to have taken care of the MAF issue..(Baylor, you have a 3.5" on yours).

The HPFP is the hurdle right now and if Vince cannot work it out in the tune then were back to dual stock pumps on the new heads, or a standalone w/6 additional injectors like we had started before the HPFP.

As soon as we have the 4" MAF tube tune finished it appears that will cover everything except the 9-10 boosted over drive pulley guys and that can be addressed with the Meth inj for WOT use.

BAM, a plan of action. I like it. I haven't messed with the new tube you sent me last week (swamped with work :( ) But do you have proper clambs / connectors for the new 4 inch pipe? I guess what I'm going to plan on doing is getting a meth kit in the (very) near future. Once you guys figure the tune out for the 4" MAF tube please PM and/or call me so we can get my unit figured out. I don't only going 3/4 throttle

Glad to see that we're seeing some real progress for us guys with the OD pulley

SIXJAK · 07-13-2012, 01:56 PM

Tracy is that MAF tube you sent me by accident a 4"? Muwahahaha. If so should I hold onto it and see where this goes and send you back the 3.5"? Gonna measure it when I get home from the alignment shop,

hunterv6 · 07-13-2012, 04:42 PM

like where this is going good info.

GretchenGotGrowl · 07-13-2012, 05:37 PM

Doesn't look like the expansion chamber for the MAF will work. Vince may be able to eventually get it to work, but to me it looks like too much turbulance is developing. We couldn't get it above 6000 RPM without breaking up, and it wasn't making any power. Welded the old intake tube back together and it worked fine.

A new issue has developed. We aren't getting proper crankcase ventilation. Cracked one of the valve covers. Going to have to check to make sure we didn't mess up the rings or break a ring land...and revist the crankcase ventilation. Will probably put a vacuum pump on it and be done with that issue once and for all.

scrming · 07-13-2012, 05:49 PM

Quote:

Originally Posted by GretchenGotGrowl

Doesn't look like the expansion chamber for the MAF will work. Vince may be able to eventually get it to work, but to me it looks like too much turbulance is developing. We couldn't get it above 6000 RPM without breaking up, and it wasn't making any power. Welded the old intake tube back together and it worked fine.

A new issue has developed. We aren't getting propery crankcase ventilation. Cracked on of the valve covers. Going to have to check to make sure we didn't mess up the rings or break a ring land...and revist the crankcase ventilation. Will probably put a vacuum pump on it and be done with that issue once and for all.

Damn... hope just the valve covers!!

07-13-2012, 11:15 AM	#1
BaylorCamaro Track > 1/4 Mile Drives: 2016 C7 Z51 Join Date: Sep 2009 Location: League City, TX Posts: 6,072 View My Garage	Where do WE stand with the HPFP & MAF? Alright so I made this thread because we as a community have been discussing these two different issues in like five or more other threads and it's hard to follow and find what was posted in all these different areas. We're still very much in the infancy of having a FI V6 5th gen Camaro, and as such we're still running into problems and finding new ones. The biggest issues currently seem to be the stock fuel stystem and our (weak) mass air flow sensor. First off, I know we have a couple guys toying around with the HPFP and Smoke is sending his car back down to Tracy so they can play with the OD pulley and HPFP and get a proper tune, so all of us super charged guys putting out more than 6 psi of boost can actually see some serious gains. Where do we currently stand with the tune on the aftermarket HPFP? I ask only becaue I know one or two people have it and think it seems to be working, but then when I was talking to Vince a couple days ago, he claimed he's not too sure it's working 100% and is very skeptical. Secondly, I believe it was Can't C Me that was going to try out the JET MAF, is there any news on that? This seems to be another issue we have and that is maxing out our MAF sensor. Lets try to use this thread to facilitate discussion about the HPFP and MAF, as it's a PITA to filter through several threads to find the info. __________________ Automotive YouTube Channel / Texas World Speedway / MSR Houston

07-13-2012, 11:23 AM	#2
GretchenGotGrowl Drives: 11 F150 EB/13 Sonic RS/15 Z06 Join Date: Sep 2010 Location: Little Rock, AR Posts: 7,129 View My Garage	Here's we I am. Put it back on the dyno yesterday afternoon with the new intake setup and tried a few tunes. Something isn't right, but we just don't know what it is. At first it looked like the in-tank pump wasn't keeping up, but that didn't make sense since we weren't flowing any more air so we shouldn't have needed more fuel. Looked at it to make sure there was nothing wrong with it and it seems okay. Now we are getting misfires on two cylinders. Going to swap the plugs out and see if that fixes it. Really not sure what is going on at the moment. I'm headed over there in about an hour and will try to update as we work through this. __________________ New Ride -- 2015 Z06 2LZ (stock) -- Journal Old Ride -- 2012 Camaro 2LT/RS (647 RWHP & 726 RWTQ) -- Build Thread

07-13-2012, 11:31 AM	#4
GretchenGotGrowl Drives: 11 F150 EB/13 Sonic RS/15 Z06 Join Date: Sep 2010 Location: Little Rock, AR Posts: 7,129 View My Garage	We are just running pump gas with the new HPFP. Will do a meth/water tune once we get this one worked out. I'll run the MAF thing by Vince, but I think he would have seen something in the logs. __________________ New Ride -- 2015 Z06 2LZ (stock) -- Journal Old Ride -- 2012 Camaro 2LT/RS (647 RWHP & 726 RWTQ) -- Build Thread

07-13-2012, 11:33 AM	#5
smoke1lt Drives: 2011 1lt/rs/sim Join Date: Sep 2010 Location: pa Posts: 372	Thanks for the info Gretchen,I hope you can get it dialed in.Keep us updated. __________________ RX-SUPERCHARGED/RX SUPER CHILLER/RX TB/RX PORTED IM/BLACK ICE-OLATER/BBK LT HEADERS/HFC/ARK-DTS CATBACK/EIBACH SPRINGS AND SWAYBARS/ORION SUBS AND AMPS...next mods RX od pulley ,3.91 gears

07-13-2012, 11:55 AM	#9
BaylorCamaro Track > 1/4 Mile Drives: 2016 C7 Z51 Join Date: Sep 2009 Location: League City, TX Posts: 6,072 View My Garage	ugh, adding extra injectors sounds like the last thing I want to do right now, lol.. __________________ Automotive YouTube Channel / Texas World Speedway / MSR Houston

07-13-2012, 01:56 PM	#11
SIXJAK Drives: MO's only SC'd LLT. Join Date: Feb 2010 Location: Branson MO Posts: 2,574 View My Garage	Tracy is that MAF tube you sent me by accident a 4"? Muwahahaha. If so should I hold onto it and see where this goes and send you back the 3.5"? Gonna measure it when I get home from the alignment shop, __________________ IPF supercharger kit, IPF tune, SW LT's, R. Tech HFC's, ARK DT-S catback, SS Brembo brake upgrade, BC Racing adjustable coilovers, Hurst STS, Pfadt rear arm package, Pfadt adjustable sways & end links, Pfadt diff bushings, BMR rear cradle full kit blk bezels,SS diffuser, Innovate gauges.

07-13-2012, 04:42 PM	#12
hunterv6 Always bet on Black Drives: 2011 turbo LS, 2012 f 150, Join Date: Nov 2010 Location: Concord Nc Posts: 1,983	like where this is going good info. __________________

07-13-2012, 05:37 PM	#13
GretchenGotGrowl Drives: 11 F150 EB/13 Sonic RS/15 Z06 Join Date: Sep 2010 Location: Little Rock, AR Posts: 7,129 View My Garage	Doesn't look like the expansion chamber for the MAF will work. Vince may be able to eventually get it to work, but to me it looks like too much turbulance is developing. We couldn't get it above 6000 RPM without breaking up, and it wasn't making any power. Welded the old intake tube back together and it worked fine. A new issue has developed. We aren't getting proper crankcase ventilation. Cracked one of the valve covers. Going to have to check to make sure we didn't mess up the rings or break a ring land...and revist the crankcase ventilation. Will probably put a vacuum pump on it and be done with that issue once and for all. __________________ New Ride -- 2015 Z06 2LZ (stock) -- Journal Old Ride -- 2012 Camaro 2LT/RS (647 RWHP & 726 RWTQ) -- Build Thread Last edited by GretchenGotGrowl; 07-13-2012 at 06:57 PM.