New Full Blown 70mm cast TB
I had idle issues all of a sudden a few months back. I fixed them, mostly, with a new IAC motor but it took the ECU a few hours to learn it. People told me to adjust the BISS. Never got 'round to it. I still can't just hop in and drive on a cold morning or it might sputter and die, it even happens in the middle of the day sometimes, jump in, start up and give it a few seconds and it's alright. I have no idea how long my TB has been crushed. It was driving alright. there were some issues, it would "pop" sometimes when getting on the throttle.
I don't hear anyone having any problems with the mil.spec unit. I'll do some more research but likely just going to do that.
I don't hear anyone having any problems with the mil.spec unit. I'll do some more research but likely just going to do that.
can any other knowledgeable people weigh in on whether I'll have problems putting a 65mm TB on a 70mm plenum?
MAPerformance who sold me the IM/TB combo?
should I consider getting my IM modified by somehow putting material back and smoothed out?
I don't know if FBM will help me out but I also don't want to have to stress about using t-bolt clamps on my TB going forward.
I guess I could just try it and if it causes problems deal with them then. I've read here that you want the two port-matched. Can any machine shop add material and then port match? MAP?
Never mind.
MAPerformance who sold me the IM/TB combo?
should I consider getting my IM modified by somehow putting material back and smoothed out?
I don't know if FBM will help me out but I also don't want to have to stress about using t-bolt clamps on my TB going forward.
I guess I could just try it and if it causes problems deal with them then. I've read here that you want the two port-matched. Can any machine shop add material and then port match? MAP?
Never mind.
Last edited by wjamyers; Dec 20, 2013 at 12:50 PM. Reason: cleanup
can any other knowledgeable people weigh in on whether I'll have problems putting a 65mm TB on a 70mm plenum?
MAPerformance who sold me the IM/TB combo?
should I consider getting my IM modified by somehow putting material back and smoothed out?
I don't know if FBM will help me out but I also don't want to have to stress about using t-bolt clamps on my TB going forward.
I guess I could just try it and if it causes problems deal with them then. I've read here that you want the two port-matched. Can any machine shop add material and then port match? MAP?
Sure wish I'd just gone Mil.Spec from the get go. I searched for any issues on their TB and found only one but did find a number of people whose TB problems were solved with Mil.Spec seals.
MAPerformance who sold me the IM/TB combo?
should I consider getting my IM modified by somehow putting material back and smoothed out?
I don't know if FBM will help me out but I also don't want to have to stress about using t-bolt clamps on my TB going forward.
I guess I could just try it and if it causes problems deal with them then. I've read here that you want the two port-matched. Can any machine shop add material and then port match? MAP?
Sure wish I'd just gone Mil.Spec from the get go. I searched for any issues on their TB and found only one but did find a number of people whose TB problems were solved with Mil.Spec seals.
The only concern I'd have is if the TB surface is flat. When you weld a flange on the IM it needs to be milled due to the high heat of welding.
Here is a pic of my FB on a stock IM. You can see the step. I'd consider this a problem. FB does too, that's why they include a stepper that goes between their TB to a stock size IM.
Also including a pic of the IM step that opens up.

"unfortunately, due to the timeframe of the purchase they are not willing to do anything to help out on that" - Vender's response when I asked them to coax Full Blown to do the right thing.
I don't think the timeframe of the purchase is in anyway relevant except as an excuse to not back up this obviously defective part. NO ONE else's throttle bodies get crushed by t-bolt clamps. These units are trash.
Full Blown Motorsports is not an ethical and forthright manufacturer and has lost my business, permanently, I don't care if they come up with the second coming of the turbo charger, I'll never purchase anything from them ever again.
I don't think the timeframe of the purchase is in anyway relevant except as an excuse to not back up this obviously defective part. NO ONE else's throttle bodies get crushed by t-bolt clamps. These units are trash.
Full Blown Motorsports is not an ethical and forthright manufacturer and has lost my business, permanently, I don't care if they come up with the second coming of the turbo charger, I'll never purchase anything from them ever again.
Yesterday I decided to try to help other people from suffering the same fate as me and I put up reviews ...
At Full Blown Motorsports (not yet published):
http://fullblownmotorsports.com/full...-throttle-body
MAPerformance (published):
http://www.maperformance.com/mitsubi...0mmtb-evo.html
LancerShop (not yet published):
http://www.lancershop.com/customer/p...productid=5955
Amazon (published):
Today I realized that most of the rest of you have not done so (you can't have, since I was the first or second person reviewing it in all 4 places.)
So why don't you guys go and add your own reviews so that maybe the next poor dumb sap won't get screwed the way we were?
I updated or added all the reviews with this:
At Full Blown Motorsports (not yet published):
http://fullblownmotorsports.com/full...-throttle-body
MAPerformance (published):
http://www.maperformance.com/mitsubi...0mmtb-evo.html
LancerShop (not yet published):
http://www.lancershop.com/customer/p...productid=5955
Amazon (published):
Today I realized that most of the rest of you have not done so (you can't have, since I was the first or second person reviewing it in all 4 places.)
So why don't you guys go and add your own reviews so that maybe the next poor dumb sap won't get screwed the way we were?
I updated or added all the reviews with this:
"A year and a half after I bought it, after experiencing the last 6 months of idle problems, I went to clean it and found the inlet crushed by the t-bolt clamp connecting the UICP.
It turns out I used the wrong size t-bolt clamp (3", 79mm/87mm) and it crushed it. Make sure you use the right size T-bolt (2.75") or just use a worm!
This throttle body was mostly like stock during it's life except for a chronic stickiness that would cause it to jump when trying to roll on the throttle. This was pretty annoying and caused you to modify your driving style but other than that it was a good unit. If not for that I would have given it 5 stars. "
It turns out I used the wrong size t-bolt clamp (3", 79mm/87mm) and it crushed it. Make sure you use the right size T-bolt (2.75") or just use a worm!
This throttle body was mostly like stock during it's life except for a chronic stickiness that would cause it to jump when trying to roll on the throttle. This was pretty annoying and caused you to modify your driving style but other than that it was a good unit. If not for that I would have given it 5 stars. "
Last edited by wjamyers; Dec 20, 2013 at 01:15 PM. Reason: cleanup
I dont understand why FB would cover it if the customer used the wrong size Tbolt clamp
Yesterday I decided to try to help other people from suffering the same fate as me and I put up reviews ...
At Full Blown Motorsports (not yet published):
http://fullblownmotorsports.com/full...-throttle-body
MAPerformance (published):
http://www.maperformance.com/mitsubi...0mmtb-evo.html
LancerShop (not yet published):
http://www.lancershop.com/customer/p...productid=5955
Amazon (published):
Amazon.com: Mitsubishi Evo 8-9 Full Blown Cast 70mm Throttle Body: Automotive
Today I realized that most of the rest of you have not done so (you can't have, since I was the first or second person reviewing it in all 4 places.)
So why don't you guys go and add your own reviews so that maybe the next poor dumb sap won't get screwed the way we were?
At Full Blown Motorsports (not yet published):
http://fullblownmotorsports.com/full...-throttle-body
MAPerformance (published):
http://www.maperformance.com/mitsubi...0mmtb-evo.html
LancerShop (not yet published):
http://www.lancershop.com/customer/p...productid=5955
Amazon (published):
Amazon.com: Mitsubishi Evo 8-9 Full Blown Cast 70mm Throttle Body: Automotive
Today I realized that most of the rest of you have not done so (you can't have, since I was the first or second person reviewing it in all 4 places.)
So why don't you guys go and add your own reviews so that maybe the next poor dumb sap won't get screwed the way we were?
I dont understand why your out to try and ruin the reputation of FB? I did a simple google search for the throttle body and there are multiple posts on not to overtighten the tbolt clamp or you could crack it. Why would FB cover there TB if its something the OP did? Its like running STMs Alum intercooler and overtightning the tclamps and crushing the pipe which is easy to do and then blame STM for making to thin of a intercooler pipe.
I have always used a sticky/tacky compound (even utra hold hairspray) and sprayed it around my pipes so I wouldnt have to tighten the tbolts nearly as much as I would without it and I hold 40psi without issues.
Im not taking sides, Im just looking from a vendor prospective on why they would cover a cracked lip on a TB when the OP overtighted it or used the wrong size tbolt.
There are plenty of people running the TB without issues
I dont understand why your out to try and ruin the reputation of FB? I did a simple google search for the throttle body and there are multiple posts on not to overtighten the tbolt clamp or you could crack it. Why would FB cover there TB if its something the OP did? Its like running STMs Alum intercooler and overtightning the tclamps and crushing the pipe which is easy to do and then blame STM for making to thin of a intercooler pipe.
I have always used a sticky/tacky compound (even utra hold hairspray) and sprayed it around my pipes so I wouldnt have to tighten the tbolts nearly as much as I would without it and I hold 40psi without issues.
Im not taking sides, Im just looking from a vendor prospective on why they would cover a cracked lip on a TB when the OP overtighted it or used the wrong size tbolt.
There are plenty of people running the TB without issues
I have always used a sticky/tacky compound (even utra hold hairspray) and sprayed it around my pipes so I wouldnt have to tighten the tbolts nearly as much as I would without it and I hold 40psi without issues.
Im not taking sides, Im just looking from a vendor prospective on why they would cover a cracked lip on a TB when the OP overtighted it or used the wrong size tbolt.
There are plenty of people running the TB without issues
If you know that, perhaps you can tell us whether Full Blown Motorsports are even slightly interested in finding out what size clamp anyone used? Because if they are, that's the first I've heard of it.
[EDIT] That's a very good point and I did indeed use the wrong size clamp (3", 79mm/87mm)
Last edited by wjamyers; Dec 20, 2013 at 12:43 PM. Reason: cleaning up my mess
I dont understand why your out to try and ruin the reputation of FB? I did a simple google search for the throttle body and there are multiple posts on not to overtighten the tbolt clamp or you could crack it. Why would FB cover there TB if its something the OP did? Its like running STMs Alum intercooler and overtightning the tclamps and crushing the pipe which is easy to do and then blame STM for making to thin of a intercooler pipe.
I have always used a sticky/tacky compound (even utra hold hairspray) and sprayed it around my pipes so I wouldnt have to tighten the tbolts nearly as much as I would without it and I hold 40psi without issues.
Im not taking sides, Im just looking from a vendor prospective on why they would cover a cracked lip on a TB when the OP overtighted it or used the wrong size tbolt.
There are plenty of people running the TB without issues
I have always used a sticky/tacky compound (even utra hold hairspray) and sprayed it around my pipes so I wouldnt have to tighten the tbolts nearly as much as I would without it and I hold 40psi without issues.
Im not taking sides, Im just looking from a vendor prospective on why they would cover a cracked lip on a TB when the OP overtighted it or used the wrong size tbolt.
There are plenty of people running the TB without issues
I posted on post 177 that I cracked it. I reread what I posted and it reads like I tightened it snug then did 2 to 3 more full revolutions of tightening it down. That's not what I did. I may have tightened it 3/4 of a turn in 1/4 turn increments after I snugged it down.
It cracked right at the casting mark. I showed it to FB and they offered me a discounted BNIB, but weren't interested in an exchange. Fair enough. I decided that I will weld on a 3" ID aluminum tube with a thicker wall with a lip.
I agree on TB and all IC piping is to use hairspray on the pipe to coupler contact like you recommend.
I've tightened my stock TB much tighter than I did this TB, but I learned a lesson. As detroit pistins pointed out it may have been too small a T-Bolt. IDK as I've never had this problem before with any T-Bolt.
Last edited by PureDrivePerformance; Nov 12, 2013 at 01:46 PM.
Nice!!! Is that with your FP Black?
I'm on the ported stock TB and IM kick. We're selling the MIL.SPEC 65mm TB because of this. I would have sold aftermarket TB, but at this point I think the ported stock is the way to go for most applications.
For big time HP, I think you may have to sacrifice a little and go with big IM and TB.
I'm on the ported stock TB and IM kick. We're selling the MIL.SPEC 65mm TB because of this. I would have sold aftermarket TB, but at this point I think the ported stock is the way to go for most applications.
For big time HP, I think you may have to sacrifice a little and go with big IM and TB.



