gray1g Posted February 13, 2005 Report Share Posted February 13, 2005 After installing my boost gauge today I see I've only been hitting 12.5 lbs of boost. I pull 20 vac so I'm guessing there is no leak? I have the sppedtuning 17 psi chip. I replaced all the vac lines and I still have the stock exhaust system(down pipe, cat, and catback) so I'm assuming this might have something to do with it. Any ideas? I read about the wastegate mod but don't understand it. Also I notice people putting a mbc on. Is this to get around certian obstacles? Any help appreciated! ThanksAlso just flushed my tranny with the IPD kit, couldn't believe how easy it is. Link to comment Share on other sites More sharing options...
ROB @ VMS Posted February 13, 2005 Report Share Posted February 13, 2005 Dyno and get a airfuel curve or dont even bother messing with it. Link to comment Share on other sites More sharing options...
gray1g Posted February 13, 2005 Author Report Share Posted February 13, 2005 I already dyno'd it about 1.5 month ago. I don't know how to post it on here. Link to comment Share on other sites More sharing options...
1black850r Posted February 13, 2005 Report Share Posted February 13, 2005 Someone help this guy out I'm interested to see what a/f reading he gets with a s.t. chip. Link to comment Share on other sites More sharing options...
gray1g Posted February 13, 2005 Author Report Share Posted February 13, 2005 If anyone wants to see my graphs pm me your email. Link to comment Share on other sites More sharing options...
JHEIII874T5M Posted February 14, 2005 Report Share Posted February 14, 2005 you say you replaced your vacuum lines. However ,have you replaced all the intercooler piping with Samco hoses?Could you do me a favor and check your hose that comes right off the throttle body. There is an elbow that comes off of it, check to see if that as torn. Link to comment Share on other sites More sharing options...
Mesoam Posted February 14, 2005 Report Share Posted February 14, 2005 here's the graphs Link to comment Share on other sites More sharing options...
gray1g Posted February 14, 2005 Author Report Share Posted February 14, 2005 I'll check tomorrow. Thanks. My buddy is about to take my car for a week and make some solid intercooler pipes and an Intake. He's also going to look at the downpipe and exhaust. He'll let me know about prices later. Feel free to check out some of his work under (projects) http://www.jmfabrications.com/ Link to comment Share on other sites More sharing options...
JHEIII874T5M Posted February 14, 2005 Report Share Posted February 14, 2005 I'll check tomorrow. Thanks. My buddy is about to take my car for a week and make some solid intercooler pipes and an Intake. He's also going to look at the downpipe and exhaust. He'll let me know about prices later. Feel free to check out some of his work under (projects) http://www.jmfabrications.com/←solid intercooler pipes? What do you mean? We have some decent piping stock, just the rubber connectors wear over time in high pressure areas, such as the throttle body's idle air controller elbow.Best of luck with your new piping Judging by your charts, the dyno operator or whoever was driving wasn't quite aware as to how to dyno the automatic 850s since you only read 4.5K +. If you would like to know how to achieve a dyno chart reading from around 3500+, ask... otherwise, if you were intending to only do a 4.5K+ then my apologies Also what gear was this dyno done in? 65-80MPH or 90 - 110 MPH?BTW... I'm sorry if this post seems at all hostile, just trying to offer a hand where I can :) Link to comment Share on other sites More sharing options...
gray1g Posted February 14, 2005 Author Report Share Posted February 14, 2005 The post doesn't seem hostile at all. By solid intercooler pipes I meant whatever parts are plastic would be metal. I'd like one piece pipes as well and would probably make them like the reverse ones. As far as the dyno goes, I never dyno'd an auto before this one. I was there with 2 other members from the board (Don S. and Turbo850???) The pulls were from 60-65mph.Feel free to tell me how to make the pull. Link to comment Share on other sites More sharing options...
JHEIII874T5M Posted February 14, 2005 Report Share Posted February 14, 2005 As I'm sure you know, your dyno was completed in "2nd gear" and only achieved around 1500 RPM of your powerband.Your goal is to find the gear nearest to 1:1 so the numbers that are displayed are accurate, well that's 4th gear for us, but people don't like to put "that much" strain on the motor, so alot of us just opt for 3rd gear.The way that I have figured out works perfectly just about every time is as follows:1. Ensure that the car is in "E" Economy mode2. Place Shifter Lever in "3"3. Achieve around 60 MPH and go 95% throttle, don't hit the little "kickdown switch" the little notch you feel when you go 100% throttle it almost feels like a switch, don't push the pedal that far as it will hit 2nd gear and you will only ahieve the 4500RPM+ tha tyou did previously. Instead, just go 95% throttle and hold the gear.The dyno should start at arond 3500 RPM and go to redline.This is the best way tha tI have found to do it. To give it a shot, just go out to the highway and achieve around 60 MPH, and put the shifter from D to 3 and make sure the car's in "economy" mode. Just hit the gas 95% throttle, you'll notice the boost starts to build and you sould be around 3500 RPM. Let off if you please before the speed limit, otherwise that gear should take you to around 110 MPH :) Link to comment Share on other sites More sharing options...
gray1g Posted February 15, 2005 Author Report Share Posted February 15, 2005 So you are saying to stay in economy and never switch to sport? Link to comment Share on other sites More sharing options...
ikorman Posted February 15, 2005 Report Share Posted February 15, 2005 I have been getting 10PSI on my guage ever since I got it. I have an IPD chip. Recently, my mechanic discovered that the guage tubes are not connected correctly and the reading is not correct. He will be fixing it soon. Moral: check your boost guage connections. You might not be getting the correct reading. Link to comment Share on other sites More sharing options...
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